SUMMARY OF THE JOINT PROXY STATEMENT/PROSPECTUS/INFORMATION STATEMENT

This summary highlights selected information contained elsewhere in this document and may not contain all the information that is important to you. You should carefully read this entire joint proxy statement/prospectus/information statement, including the annexes and the other documents to which we refer, for a more complete understanding of the merger and the other matters being considered at the applicable stockholders’ meeting. For more information, please see the section entitled “Additional Information—Where You Can Find More Information” in this joint proxy statement/prospectus/information statement.

The Companies

Allscripts-Misys Healthcare Solutions, Inc.

222 Merchandise Mart Plaza, Suite 2024

Chicago, Illinois 60654

(312) 506-1213

Allscripts is a leading provider of clinical software, services, information and connectivity solutions that empower physicians and other healthcare providers to deliver best-in-class patient safety, clinical outcomes and financial results. Allscripts’ businesses provide innovative solutions that inform physicians with just right, just in time information, connect physicians to each other and to the entire community of care, and transform healthcare, improving both the quality and efficiency of care. Allscripts provides various clinical software applications, including electronic health records, practice management, revenue cycle management, clearinghouse services, electronic prescribing, Emergency Department Information System (EDIS), hospital care management and discharge management solutions, document imaging solutions, and a variety of solutions for home care and other post-acute facilities.

Arsenal Merger Corp.

222 Merchandise Mart Plaza, Suite 2024

Chicago, Illinois 60654

(312) 506-1213

Arsenal Merger Corp. is a wholly owned subsidiary of Allscripts and was formed solely for the purpose of completing the merger. Arsenal Merger Corp. has not carried on any activities to date, except for activities incidental to its formation and activities undertaken in connection with the merger.

Eclipsys Corporation

Three Ravinia Drive

Atlanta, GA 30346

(404) 847-5965

Eclipsys is a provider of advanced integrated clinical, revenue cycle and performance management software and related professional services that help healthcare organizations and physicians improve clinical, financial and operational outcomes. Eclipsys develops and licenses proprietary software and content that is designed for use in connection with many of the key clinical, financial and operational functions that healthcare organizations require. Eclipsys also provides professional services related to its software. These services include software implementation and maintenance, outsourcing of information technology operations, remote hosting of its software and third-party health information technology applications, technical and user training, and consulting.

The Merger (see page 77)

Allscripts and Eclipsys have agreed to combine under the terms and conditions set forth in the Merger Agreement, which is described in this joint proxy statement/prospectus/information statement. Pursuant to the Merger Agreement, Arsenal Merger Corp., a wholly owned subsidiary of Allscripts, will merge with and into Eclipsys, with Eclipsys surviving the merger and continuing as the surviving corporation and a wholly owned subsidiary of Allscripts. The Merger Agreement is attached as Annex A to this joint proxy statement/prospectus/information statement, and we encourage you to read it in its entirety.

Merger Consideration

Upon completion of the merger, shares of Eclipsys common stock will be converted into the right to receive 1.2 shares of Allscripts common stock, which we refer to as the Exchange Ratio. The Exchange Ratio is fixed and will not be adjusted for changes in the stock prices of either company before the merger is completed. Allscripts will not issue fractional shares in the merger. Instead, each holder of shares of Eclipsys common stock who would otherwise be entitled to a fractional share of Allscripts common stock will be entitled to receive a cash payment, without interest, from the exchange agent in lieu of such fractional share. Allscripts stockholders will continue to own their existing Allscripts shares.

Each outstanding Eclipsys stock option, restricted stock, restricted stock unit, deferred stock unit and performance stock unit award will be converted into an Allscripts option, restricted stock, restricted stock unit, deferred stock unit or performance stock unit award, as the case may be, with appropriate adjustments to the number of shares subject to the award and, if applicable, the per share exercise price to reflect the Exchange Ratio. The substitute awards will become exercisable, vested or payable, as the case may be, upon the same terms that applied to the related Eclipsys award, subject to any acceleration of vesting (and any payment adjustment, in the case of performance stock units) that occurs as a result of the merger or any other subsequent event, as required in the applicable award agreement or employment agreement.

The Coniston Transactions (see page 189)

Framework Agreement

On June 9, 2010, Allscripts entered into a Framework Agreement with Misys. Eclipsys also entered into the Framework Agreement solely as third party beneficiary of certain provisions of the Framework Agreement. Pursuant to the Framework Agreement, Allscripts and Misys agreed, among other things and subject to certain conditions, to reduce Misys’ existing indirect ownership interest in Allscripts. As of June 8, 2010, Misys held indirectly 79,811,511 shares of Allscripts common stock, representing approximately 55% of the aggregate voting power of Allscripts’ capital stock. Upon completion of the Coniston Transactions described below and if Misys elects to exercise its right to require Allscripts to repurchase shares from Misys after the closing of the merger pursuant to the Contingent Share Repurchase described below, Misys’ equity stake in Allscripts following the merger is expected to be approximately 8%.

Subject to the terms and conditions of the Framework Agreement, Misys and Allscripts agreed that:

We refer to the Exchange, the Share Repurchase and the Secondary Offering as the Coniston Transactions.

The closing of the Coniston Transactions is a condition to completion of the merger.

Allscripts expects to finance the Share Repurchase and the Contingent Share Repurchase, and to pay fees and expenses related to the Coniston Transactions and the Contingent Share Repurchase, with its cash on hand and the proceeds of the debt financing described below.

The Share Repurchase

Upon the terms and subject to the conditions of the Framework Agreement, Allscripts will repurchase 24,442,083 shares of Allscripts common stock held by Misys subsidiaries at a price per share of $18.82, for an aggregate consideration of $460.0 million, plus a payment of a premium of $117.4 million in connection with the sale by Misys of its controlling interest, for a total of $577.4 million. The price per share is based on the volume weighted average price of Allscripts’ common stock for the ten trading days immediately prior to the signing of the Framework Agreement.

The Secondary Offering

Upon the terms and subject to the conditions of the Framework Agreement and a related Registration Rights Agreement, Misys agreed to cause one or more of its subsidiaries to enter into an underwriting agreement for a secondary public offering of shares of Allscripts common stock pursuant to which one or more underwriters would purchase no fewer than 36 million Secondary Offering Shares at a price to the public of not less than $16.50 per share. Misys also agreed that the aggregate number of Secondary Offering Shares purchased by the underwriters in the Secondary Offering would not, when combined with the Repurchase Shares, result in Misys holding, directly or indirectly, fewer than 15.5 million shares of Allscripts common stock prior to any exercise of the underwriters’ over-allotment option. If a sale pursuant to the underwriters’ over-allotment option would result in Misys’ direct or indirect ownership falling below such threshold, then Allscripts would have a right of first refusal to issue and sell pursuant to the over-allotment option up to such number of shares of Allscripts common stock as is equal to the difference between the number of shares of Allscripts common stock required to satisfy the over-allotment option and the number of shares of Allscripts common stock that Misys may sell without falling below such threshold. For purposes of determining the number of outstanding shares of Allscripts common stock, this joint proxy statement/prospectus/information statement assumes that Allscripts does not exercise its rights under certain circumstances to issue and sell new shares of Allscripts common stock to satisfy the over-allotment option in the Secondary Offering.

Amended and Restated Relationship Agreement

Upon the completion of the Exchange and the Share Repurchase, the Relationship Agreement entered into between Allscripts and Misys on March 17, 2008 (as amended on August 14, 2008 and January 5, 2009) will be amended and restated, which we refer to as the Amended and Restated Relationship Agreement.

Under the existing Relationship Agreement, Misys is entitled to nominate six out of the ten members of the Allscripts board of directors, including the chairman of the board. When Allscripts and Misys enter into the Amended and Restated Relationship Agreement, Misys will be entitled to nominate two directors, which will be permanently reduced to one director if Misys owns less than 15.5 million shares of Allscripts common stock, and which right will be permanently eliminated if Misys owns less than 5.0% of the then outstanding shares of Allscripts common stock or takes certain actions specified in the standstill provision referred to below.

The Amended and Restated Relationship Agreement will also contain a customary standstill provision, which will restrict Misys’ ability to acquire Allscripts securities for a period of five years after the closing of the Coniston Transactions. In addition, for a period of eighteen months after the closing of the Coniston Transactions, Misys will be obligated, subject to certain exceptions, to not deploy, sell, license or market any electronic medical health record or physician practice management software, related applications or solutions in any country in the world where Allscripts is conducting such operations on the date of the Framework Agreement, or utilize the name Misys or any trade name, trademark, brand name, domain name or logo containing or associated with the name Misys in connection with any health information technology solutions.

Written Consent

Pursuant to the terms of the Framework Agreement, Misys has caused its direct and indirect subsidiaries as holders of Allscripts common stock to act by written consent in lieu of a meeting of stockholders of Allscripts to approve the issuance of the Exchange Shares to certain subsidiaries of Misys in exchange for 100% of the issued and outstanding shares of an indirect subsidiary of Misys and an amendment to the Allscripts certificate of incorporation to increase the number of authorized shares to permit the issuance of the Exchange Shares and the shares of Allscripts common stock to be issued to Eclipsys stockholders pursuant to the Merger Agreement. In addition, pursuant to the Framework Agreement, Misys agreed to approve, by written consent, certain additional amendments to the Allscripts certificate of incorporation that will be effective only upon the closing of the Coniston Transactions, which would (i) change the name of Allscripts from “Allscripts-Misys Healthcare Solutions, Inc.” to “Allscripts Healthcare Solutions, Inc.”, (ii) eliminate the ability of Allscripts stockholders to act by written consent, (iii) elect that Allscripts be governed by Section 203 of the Delaware General Corporation Law, which we refer to as the DGCL, (iv) establish certain committee structures to implement certain agreements in the Amended and Restated Relationship Agreement related to the Allscripts board of directors, (v) upon the closing of the merger, establish certain committee structures to implement certain agreements in the Merger Agreement related to the directors of Allscripts and (vi) implement certain other additional incidental or clarifying amendments. For a more complete description of the actions taken by written consent in lieu of a meeting of stockholders of Allscripts, see the section entitled “The Actions By Written Consent Of Allscripts Stockholders.”

Tax Matters

The Framework Agreement also provides that Misys will indemnify Allscripts and its affiliates from, among other taxes, taxes imposed on Newco as a result of the Coniston Transactions and certain related restructuring transactions. Under the Framework Agreement, at or prior to the closing of the Coniston Transactions, Misys is required to obtain a bank guarantee in favor of Allscripts in an amount of $168 million to support this indemnification obligation. Misys is also required under the Framework Agreement to indemnify and hold harmless Allscripts and its affiliates from taxes imposed on Newco for periods on and prior to the closing date of the Coniston Transactions and to obtain, at or prior to the closing of the Coniston Transactions, a bank guarantee in favor of Allscripts in an amount of $45 million to support this indemnification obligation.

The Debt Financing (see page 199)

Allscripts has signed a commitment letter with JPMorgan Chase Bank, N.A., Barclays Bank PLC, UBS Loan Finance LLC and certain of their affiliates for a $570 million senior secured term loan facility and a $150 million senior secured revolving facility, each of which is expected to close upon the closing of the Coniston Transactions, which we refer to as the Debt Commitment Letter. The facilities will be used to finance the Coniston Transactions and Contingent Share Repurchase, to pay certain fees and expenses in connection with the merger and the transactions contemplated by the Framework Agreement and to finance the working capital needs and general corporate purposes of Allscripts and its subsidiaries. Completion of the financing, which we refer to as the Debt Financing, is a condition to the closing of the Coniston Transactions, and the closing of the Coniston Transactions is a condition to the closing of the merger.

Recommendation of the Allscripts Audit Committee and the Allscripts Board of Directors (see page 102)

On June 8, 2010, the Allscripts audit committee, which is composed of independent members of the Allscripts board of directors, determined that the Merger Agreement and the transactions contemplated thereby are advisable, substantively and procedurally fair to, and in the best interests of, Allscripts and Allscripts’ stockholders (other than Misys and affiliates of Misys), and recommended that the Allscripts board of directors approve and adopt the Merger Agreement and the transactions contemplated thereby, and that Allscripts’ stockholders (other than Misys and affiliates of Misys) vote to approve the issuance of the Allscripts common stock to stockholders of Eclipsys pursuant to the Merger Agreement.

On June 8, 2010, the Allscripts board of directors, after hearing and considering the Allscripts audit committee’s recommendation, approved the Merger Agreement and recommended that Allscripts’ stockholders (including the minority stockholders) vote to approve the issuance of the Allscripts common stock pursuant to the Merger Agreement.

In determining whether to adopt the Merger Agreement, the Allscripts audit committee and the Allscripts board of directors consulted with members of Allscripts’ senior management and with their respective legal and financial advisors. In arriving at their determinations, the Allscripts audit committee and the Allscripts board of directors considered the factors described in the section entitled “The Merger—Recommendation of the Allscripts Audit Committee and the Allscripts Board of Directors and Their Reasons for the Merger and the Coniston Transactions.”

Recommendation of the Eclipsys Board of Directors (see page 109)

On June 8, 2010, the Eclipsys board of directors approved the Merger Agreement and the transactions contemplated thereby and recommended that Eclipsys’ stockholders vote to adopt the Merger Agreement.

In determining whether to adopt the Merger Agreement, the Eclipsys board of directors consulted with members of Eclipsys’ senior management and with its legal and financial advisors. In arriving at its determination, the Eclipsys board of directors considered the factors described in the section entitled “The Merger—Recommendation of the Eclipsys Board of Directors and Its Reasons for the Merger.”

Risk Factors (see page 23)

Allscripts and Eclipsys are each subject to various risks associated with their businesses and industries and in connection with the proposed merger. Certain of these risks are discussed in detail in the section entitled “Risk Factors,” and both Allscripts and Eclipsys urge you to read and consider carefully all of these risks.

Opinion of Blackstone, Financial Advisor to the Allscripts Audit Committee (see page 116)

Blackstone Advisory Partners LP, which we refer to as Blackstone, rendered its opinion to the Allscripts audit committee and the Allscripts board of directors that, as of June 8, 2010, and based upon and subject to the factors and assumptions set forth therein, the aggregate consideration to be paid by Allscripts in the Share Repurchase was fair from a financial point of view to the Allscripts stockholders (other than Misys and its direct and indirect subsidiaries), which we refer to as the minority stockholders of Allscripts.

The full text of the written opinion of Blackstone, dated June 8, 2010, which sets forth assumptions made, procedures followed, matters considered and limitations on the review undertaken in connection with the opinion, is attached to this joint proxy statement/prospectus/information statement as Annex D. Blackstone provided its opinion for the information and assistance of the Allscripts audit committee and the Allscripts board of directors in connection with their consideration of the Share Repurchase. The Blackstone opinion was limited to the fairness, from a financial point of view, to the minority stockholders of Allscripts of the aggregate consideration to be paid by Allscripts in the Share Repurchase, and Blackstone expressed no opinion as to the fairness of the Share Repurchase to the holders of any other class of securities, creditors or other constituencies of Allscripts or as to the underlying decision by Allscripts to engage in the Share Repurchase or the merger. The Blackstone opinion is not a recommendation as to how any holder of Allscripts’ common stock should vote with respect to the transactions contemplated in the Merger Agreement or any other matter. Pursuant to an engagement letter between the Allscripts audit committee and Blackstone, Allscripts has agreed to pay Blackstone a fee, a significant portion of which is contingent upon completion of the Share Repurchase.

Opinions of William Blair, Financial Advisor to the Allscripts Audit Committee (see page 123)

William Blair & Company, L.L.C., which we refer to as William Blair, rendered its oral opinions to the Allscripts audit committee and the Allscripts board of directors, subsequently confirmed in writing, as of June 8, 2010 and based upon and subject to the assumptions, limitations and qualifications set forth in its written opinions, as to the fairness, from a financial point of view, to the holders of Allscripts common stock (other than Misys or its affiliates) of (i) the consideration to be paid by Allscripts in the proposed merger pursuant to the Merger Agreement and in the Share Repurchase and the Contingent Share Repurchase pursuant to the Framework Agreement, and (ii) the consideration to be paid by Allscripts in the Share Repurchase pursuant to the Framework Agreement.

The full text of the written opinions of William Blair, each dated June 8, 2010, which set forth the assumptions made, procedures followed, matters considered and limitations on the review undertaken in connection with each opinion, are attached to this joint proxy statement/prospectus/information statement as Annexes E and F and are incorporated herein by reference. Allscripts encourages its stockholders to read the opinions carefully in their entirety. William Blair provided its opinions for the information and assistance of the Allscripts audit committee and the Allscripts board of directors in connection with their consideration of (i) the proposed merger, Share Repurchase and Contingent Share Repurchase, and (ii) the Share Repurchase. William Blair did not address the merits of the underlying decision by Allscripts to engage in, and William Blair expressed no opinion as to the fairness to the holders of any other class of securities, creditors or other constituencies of Allscripts as to, the proposed merger, Share Repurchase and Contingent Share Repurchase, or any other aspect of such transactions, and its opinions did not constitute a recommendation to the Allscripts board of directors, the Allscripts audit committee or any stockholder as to how to vote or otherwise act with respect to the proposed merger, Share Repurchase or Contingent Share Repurchase, or any other aspect of such transactions, and should not be relied upon by any stockholder as such. For a further discussion of William Blair’s opinions, see “The Merger—Opinions of William Blair, Financial Advisor to the Allscripts Audit Committee.”

Opinion of UBS, Financial Advisor to the Allscripts Board of Directors (see page 135)

In connection with the merger, the Allscripts board of directors received a written opinion, dated June 8, 2010, from Allscripts’ financial advisor, UBS Securities LLC, which we refer to as UBS, as to the fairness, from a financial point of view and as of the date of such opinion, of the Exchange Ratio provided for in the merger. The full text of UBS’ written opinion, dated June 8, 2010, is attached to this joint proxy statement/prospectus/information statement as Annex G and describes the assumptions made, procedures followed, matters considered and limitations on the review undertaken by UBS. UBS’ opinion was provided for the benefit of the Allscripts board of directors (solely in its capacity as such) in connection with, and for the purpose of, its evaluation of the Exchange Ratio from a financial point of view and does not address any other aspect of the merger. The opinion does not address the relative merits of the merger as compared to other business strategies or transactions that might be available with respect to Allscripts or Allscripts’ underlying business decision to effect the merger. The opinion does not constitute a recommendation to any stockholder as to how to vote or act with respect to the merger.

Opinion of Perella Weinberg, Financial Advisor to the Eclipsys Board of Directors (see page 142)

Perella Weinberg Partners LP, which we refer to as Perella Weinberg, rendered its oral opinion, subsequently confirmed in writing, to the board of directors of Eclipsys that, on June 8, 2010, and based upon and subject to the various assumptions made, procedures followed, matters considered and qualifications and limitations set forth in its opinion, the Exchange Ratio of 1.2 shares of Allscripts common stock to be received in respect of each share of Eclipsys common stock in the merger was fair, from a financial point of view, to the holders of Eclipsys common stock, other than Allscripts or any of its affiliates.

The full text of Perella Weinberg’s written opinion, dated June 8, 2010, which sets forth, among other things, the assumptions made, procedures followed, matters considered and qualifications and limitations on the review undertaken by Perella Weinberg, is attached as Annex H and is incorporated by reference herein. Holders of shares of Eclipsys common stock are urged to read the opinion carefully and in its entirety. The opinion does not address Eclipsys’ underlying business decision to enter into the merger or the relative merits of the merger as compared with any other strategic alternative which may be available to Eclipsys. The opinion does not constitute a recommendation to any holder of Eclipsys common stock or holder of Allscripts common stock as to how such holder should vote or otherwise act with respect to the proposed merger or any other matter. In addition, Perella Weinberg expressed no opinion as to the fairness of the merger to, or any consideration received in connection with the merger by, the holders of any other class of securities, creditors or other constituencies of Eclipsys. Perella Weinberg provided its opinion for the information and assistance of the board of directors of Eclipsys in connection with, and for the purposes of its evaluation of, the merger. This summary is qualified in its entirety by reference to the full text of the opinion. Pursuant to an engagement letter between Eclipsys and Perella Weinberg, Eclipsys has agreed to pay Perella Weinberg a fee, a significant portion of which is contingent upon the consummation of the merger.

Interests of Certain Directors and Executive Officers of Allscripts and Eclipsys (see page 152)

Interests of Allscripts Executive Officers

Allscripts executive officers have interests in the merger that are different from, or in addition to, interests of Allscripts stockholders. Pursuant to a retention plan adopted by the Allscripts board of directors on June 8, 2010, certain Allscripts employees, including its executive officers, will be entitled to receive retention payments subject to certain conditions. See “The Merger—Interests of Allscripts Executive Officers.”

Interests of Eclipsys Directors and Executive Officers

Eclipsys directors and executive officers have interests in the merger that are different from, or in addition to, interests of Eclipsys stockholders, including the following:

See “The Merger—Interests of Eclipsys Directors and Executive Officers.”

Voting Agreements (see page 197)

In connection with the execution of the Merger Agreement, Allscripts and Eclipsys entered into a voting agreement with Misys and certain of Misys’ subsidiaries, which we refer to as the Misys Voting Agreement, and pursuant to which Misys and certain of its subsidiaries agreed, among other things, to vote in the aggregate 15.5 million shares of Allscripts common stock (approximately 10.58% of the outstanding Allscripts common stock as of June 7, 2010) in favor of the issuance of Allscripts common stock to Eclipsys stockholders pursuant to the Merger Agreement and other matters to be approved by the stockholders of Allscripts to facilitate the issuance of Allscripts common stock to Eclipsys stockholders pursuant to the Merger Agreement at the Allscripts special meeting.

In addition, Allscripts entered into voting agreements with certain directors of Eclipsys and Eclipsys entered into voting agreements with certain directors of Allscripts, pursuant to which such directors agreed to vote their shares of Eclipsys common stock or Allscripts common stock, as applicable, in favor of the issuance of Allscripts common stock to stockholders of Eclipsys pursuant to the Merger Agreement or the adoption of the Merger Agreement, as applicable.

In connection with the Framework Agreement, Misys entered into a voting agreement, which we refer to as the ValueAct Voting Agreement, with ValueAct Capital Master Fund L.P., which we refer to as ValueAct, and with Allscripts and Eclipsys entering into such agreement solely as third party beneficiaries. Pursuant to the ValueAct Voting Agreement, ValueAct agreed, among other things, to vote its shares of Misys stock (approximately 25.7% of Misys’ outstanding shares as of June 9, 2010) at the Misys general meeting in favor of the transactions contemplated by the Framework Agreement.

Termination of the Merger Agreement (see page 181)

The Merger Agreement may be terminated at any time prior to the completion of the merger by the mutual written consent of Allscripts and Eclipsys. Also, either Allscripts or Eclipsys may terminate the Merger Agreement at any time prior to the completion of the merger, subject to certain exceptions, if:

Allscripts may terminate the Merger Agreement at any time prior to the completion of the merger if:

Eclipsys may terminate the Merger Agreement at any time prior to the completion of the merger if:

Termination Fees May Be Payable Under Some Circumstances (see page 183)

Upon termination of the Merger Agreement under specified circumstances, Allscripts or Eclipsys, as the case may be, may be required to reimburse the other’s transaction expenses related to the merger up to $5 million, or pay to the other a termination fee of approximately $17.7 million or $40 million, depending on the date on which the Merger Agreement is terminated and the reasons for termination.

Conditions to Completion of the Merger (see page 167)

The obligations of Allscripts, Arsenal Merger Corp. and Eclipsys to effect the merger are subject to the fulfillment or waiver of certain closing conditions, including:

In addition, the obligations of Allscripts and Arsenal Merger Corp. to effect the merger are subject to the fulfillment or waiver of certain closing conditions, including:

Eclipsys’ obligations to effect the merger are also subject to the fulfillment or waiver of additional closing conditions, including:

Regulatory Approvals (see page 159)

The merger is subject to review under the HSR Act by the United States Federal Trade Commission, which we refer to as the FTC, and the Antitrust Division of the United States Department of Justice, which we refer to as the DOJ. The required notifications were filed on June 25, 2010 by Eclipsys and Allscripts, and the statutory waiting period under the HSR Act will expire on July 26, 2010 at 11:59 p.m., eastern time, unless it is terminated earlier by the FTC and the DOJ or is extended if the FTC or the DOJ requests additional information or documentary material. No other regulatory approvals are a condition to the completion of the merger.

Appraisal Rights and Dissenters’ Rights (see page 160)

Under the General Corporation Law of the State of Delaware, or the DGCL, neither holders of Eclipsys common stock nor Allscripts common stock will be entitled to appraisal rights in connection with the merger.

Accounting Treatment of the Merger (see page 160)

In accordance with accounting principles generally accepted in the United States, or GAAP, Allscripts will account for the acquisition of shares of Eclipsys common stock through the merger under the acquisition method of accounting for business combinations. In determining the acquirer for accounting purposes, Allscripts considered the factors required under the business combination accounting guidance, and determined that Allscripts will be considered the acquirer of Eclipsys for accounting purposes.

Material United States Federal Income Tax Consequences of the Merger (see page 160)

The merger is intended to qualify as a reorganization within the meaning of Section 368(a) of the Internal Revenue Code. Assuming the merger so qualifies, a holder of Eclipsys common stock will not recognize gain or loss upon receipt solely of Allscripts common stock in exchange for Eclipsys common stock, except with respect to cash received in lieu of fractional shares of Allscripts common stock. It is a condition to the completion of the merger that Allscripts and Eclipsys each receives a written opinion from its counsel, dated as of the date of completion of the merger, to the effect that (i) the merger will qualify as a reorganization within the meaning of Section 368(a) of the Internal Revenue Code and (ii) Eclipsys and Allscripts will each be a party to the reorganization within the meaning of Section 368(b) of the Internal Revenue Code.

Tax matters are complicated, and the tax consequences of the merger to each Eclipsys stockholder will depend on such stockholder’s particular facts and circumstances.

Eclipsys stockholders should consult their tax advisors with respect to the federal, state and other tax consequences to them of the merger.

Fees and Expenses (see page 187)

Generally, all fees and expenses incurred in connection with the Merger Agreement and the transactions contemplated by the Merger Agreement will be paid by the party incurring those expenses, subject to the specific exceptions discussed in this joint proxy statement/prospectus/information statement.

Management and Board of Directors of Allscripts After the Merger (see page 179)

Allscripts has agreed, upon completion of the merger, to establish a nine-member board of directors (if, at the effective time of the merger, Misys has the right to nominate one director of Allscripts pursuant to the Amended and Restated Relationship Agreement), or a ten-member board of directors (if, at the effective time of the merger, Misys has the right to nominate two directors of Allscripts pursuant to the Amended and Restated Relationship Agreement). The Allscripts board of directors will consist of four current Allscripts directors designated by Allscripts, three current Eclipsys directors designated by Eclipsys, the directors that Misys is entitled to nominate pursuant to the Amended and Restated Relationship Agreement and one independent director designated by Allscripts and Eclipsys. In addition, Allscripts will cause the Audit, Compensation and Nominating and Governance Committees of the Allscripts board of directors to include a majority of Allscripts-designated directors and at least one Eclipsys-designated director.

Allscripts and Eclipsys agreed that Philip M. Pead, the current president and chief executive officer of Eclipsys, will serve as chairman of the board of Allscripts for a period of three years following completion of the merger (subject to his election as a director by Allscripts’ stockholders), and that Glen E. Tullman will remain as

the chief executive officer of Allscripts. Allscripts further agreed to use its commercially reasonable efforts to cause the election of Messrs. Tullman and Pead as directors of Allscripts at each of the next three annual meetings of stockholders of Allscripts.

At the effective time of the merger, a majority of Allscripts’ directors will be independent.

Listing of Allscripts Common Stock (see page 163)

Allscripts will apply to have the shares of Allscripts common stock to be issued to Eclipsys stockholders pursuant to the Merger Agreement approved for listing on The NASDAQ Global Select Market, where Allscripts common stock currently is traded under the symbol “MDRX”. If the merger is completed, Eclipsys common stock will no longer be listed on The NASDAQ Global Select Market and will be deregistered under the Exchange Act, and Eclipsys will no longer file periodic reports with the SEC.

Comparison of Stockholders Rights (see page 213)

Both Allscripts and Eclipsys are incorporated under the laws of the State of Delaware and, accordingly, the rights of the stockholders of each are currently, and will continue to be, governed by the DGCL. If the merger is completed, Eclipsys stockholders will become stockholders of Allscripts and their rights will be governed by the by-laws of Allscripts and the Fourth Amended and Restated Certificate of Incorporation of Allscripts. The rights of Allscripts stockholders contained in the Fourth Amended and Restated Certificate of Incorporation and by-laws of Allscripts differ from the rights of Eclipsys stockholders under the Third Amended and Restated Certificate of Incorporation and the by-laws of Eclipsys, as more fully described under “Comparison of Rights of Allscripts Stockholders and Eclipsys Stockholders.” The form of the Fourth Amended and Restated Certificate of Incorporation of Allscripts is attached as Annex J to this joint proxy statement/prospectus/information statement, and we encourage you to read it carefully and in its entirety.

SUMMARY SELECTED HISTORICAL FINANCIAL DATA OF ALLSCRIPTS

The following tables set forth the selected historical consolidated financial data for Allscripts, as adjusted for the retrospective application of the accounting guidance described below. The selected consolidated financial data as of and for the fiscal years ended May 31, 2009, 2008, 2007, 2006 and 2005 have been derived from Allscripts’ consolidated financial statements, which are incorporated by reference into this joint proxy statement/prospectus/information statement. The selected consolidated financial data as of and for the nine months ended February 28, 2010 and 2009 have been derived from Allscripts’ unaudited condensed consolidated financial statements, which are incorporated by reference into this joint proxy statement/prospectus/information statement. The results for the nine months ended February 28, 2010 and 2009 are not necessarily indicative of the results that may be expected for the entire fiscal year. Allscripts’ unaudited interim financial statements reflect all adjustments that management of Allscripts considers necessary for fair statement of the financial position and results of operations for such periods in accordance with GAAP. Historical results are not necessarily indicative of the results that may be expected for any future period.

Effective June 1, 2009, Allscripts adopted accounting guidance which states that unvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are considered participating securities and shall be included in the computation of earnings per share pursuant to the two-class method. The two-class method is an earnings allocation formula that treats a participating security as having rights to earnings that would otherwise have been available to common stockholders. The provisions of this guidance are retrospective. Restricted stock units awards granted by Allscripts to certain management-level employees participate in dividends on the same basis as common shares and are nonforfeitable by the holder. As a result, these restricted stock unit awards meet the definition of a participating security.

This selected consolidated financial data should be read in conjunction with Allscripts’ Annual Report on Form 10-K for the fiscal year ended May 31, 2009 and Allscripts’ Quarterly Report on Form 10-Q for the quarterly period ended February 28, 2010. See “Additional Information—Where You Can Find More Information.”

The predecessor company, MHS, did not have any shares outstanding prior to the merger with Patriot, and therefore, the basic and diluted share count is comprised of the Allscripts shares issued on the October 10, 2008 acquisition date for all periods prior to the acquisition date. The predecessor company also had no such participating securities prior to the acquisition date. Based on these facts, there was no impact for the retroactive adoption of the accounting guidance for periods prior to the acquisition date.

SUMMARY SELECTED HISTORICAL FINANCIAL DATA OF ECLIPSYS

The following tables set forth the selected historical consolidated financial data for Eclipsys. The selected consolidated financial data as of and for the fiscal years ended December 31, 2009, 2008, 2007, 2006 and 2005 have been derived from Eclipsys’ consolidated financial statements, which are incorporated by reference into this joint proxy statement/prospectus/information statement. The selected consolidated financial data as of and for the three months ended March 31, 2010 and 2009 have been derived from Eclipsys’ unaudited condensed consolidated financial statements, which are incorporated by reference into this joint proxy statement/prospectus/information statement. The results for the three months ended March 31, 2010 and 2009 are not necessarily indicative of the results that may be expected for the entire fiscal year. Eclipsys’ unaudited interim financial statements reflect all adjustments that management of Eclipsys considers necessary for fair statement of the financial position and results of operations for such periods in accordance with GAAP. Historical results are not necessarily indicative of the results that may be expected for any future period.

This selected consolidated financial data should be read in conjunction with Eclipsys’ Annual Report on Form 10-K for the fiscal year ended December 31, 2009 and Eclipsys’ Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2010. See “Additional Information—Where You Can Find More Information.”