Sub-Item 77Q1(a)
                               AMENDMENT NO. 3 TO
        SECOND AMENDED AND RESTATED AGREEMENT AND DECLARATION OF TRUST OF
                           AIM COUNSELOR SERIES TRUST
          This Amendment No. 3 (the "Amendment") to the Second Amended and
Restated Agreement and Declaration of Trust of AIM Counselor Series Trust (the
"Trust") amends, effective as of July 5, 2006, the Second Amended and Restated
Agreement and Declaration of Trust of the Trust dated as of December 6, 2005, as
amended (the "Agreement").
          By consent dated as of July 5, 2006, the Board of Trustees of the
Trust, in accordance with Section 9.7 of the Agreement, approved the amendments
to the Agreement.
          Under Section 9.7 of the Agreement, this Amendment may be executed by
a duly authorized officer of the Trust.
          NOW, THEREFORE, the Agreement is hereby amended as follows:
     1.   A new Section 2.6B of the Agreement is hereby added after Section 2.6A
          of the Agreement as set forth below:
     "Section 2.6B. Additional Conversion Rights and Preferences of Class B1
     Shares of New FRF. In addition to the relative rights and preferences set
     forth in Section 2.5, Section 2.6A and all other provisions of this
     Agreement relating to Shares of the Trust generally, Class B1 Shares of New
     FRF (as defined in Section 2.6A(a) of the Agreement) shall have the
     following rights and preferences:
          (a)  Conversion of Class B1 Shares of New FRF. At the Class B1
               Conversion Effective Time described in Section 2.6B(d) below, all
               of the issued and outstanding Class B1 Shares of New FRF shall
               convert to Class A Shares of New FRF upon the basis of their
               respective net asset values, and thereafter shall have the
               attributes of Class A Shares of New FRF. All issued and
               outstanding Class B1 Shares shall thereafter be deemed to be
               cancelled. The stock transfer books for Class B1 Shares of New
               FRF will be closed at the Class B1 Conversion Effective Time and
               only requests for redemption of Class B1 Shares of New FRF
               received in proper form prior to the close of trading on the New
               York Stock Exchange on the date of the Class B1 Conversion
               Effective Time shall be accepted. Thereafter, redemption requests
               received by New FRF for its Class B1 Shares shall be deemed to be
               redemption requests for Class A Shares into which Class B1 Shares
               were converted.
          (b)  Attribution of Assets and Liabilities. At the Class B1 Conversion
               Effective Time described in Section 2.6B(d) below, the
               proportionate undivided interest in the net assets of New FRF
               attributable to its Class B1 Shares shall become a part of the
               proportionate undivided interest in the net assets of New FRF
               attributable to its Class A Shares, and the expenses, costs,
               charges and reserves allocated to the Class B1 Shares of New FRF
               immediately prior to the Class B1 Conversion Effective Time shall
               become expenses, costs, charges and reserves of Class A Shares of
               New FRF. New FRF shall instruct its transfer agent to reflect in
               the transfer agent's records the attribution of the Class B1
               Shares in the manner described above.
          (c)  Shareholder Accounts. At the Class B1 Conversion Effective Time
               described in Section 2.6B(d) below, each shareholder of record of
               Class B1 Shares of New FRF will receive that number of Class A
               Shares of New FRF having an aggregate net asset value equal to
               the aggregate net asset value of the Class B1 Shares of New FRF
               held by such shareholder immediately prior to the Class B1
               Conversion Effective Time. New FRF will establish an open account
               on its records in the name of each Class B1 Shareholder to which
               will be credited the respective number of Class A Shares of New
               FRF due to such shareholder. Fractional Class B1 Shares will be
               carried to the third decimal place. Certificates representing
               Class A Shares will not be issued. The net asset value of the
               Class A Shares and Class B1 Shares will be determined at the
               Class B1 Conversion Effective Time in accordance with the
               policies and procedures of New FRF as set forth in its
               registration statement.
          (d)  The conversion of Class B1 Shares into Class A Shares shall occur
               July 27, 2006 at 5:00 p.m. Eastern time or such later date and
               time as the officers of the Trust shall determine (the "Class B1
               Conversion Effective Time").
          (e)  If, prior to the Class B1 Conversion Effective Time, (1) the
               Class A Shareholders of New FRF approve any increase in expenses
               allocated to the Class A Shares of New FRF in connection with (A)
               a Plan of Distribution adopted pursuant to Rule 12b-1 under the
               1940 Act, (B) a non-Rule 12b-1 shareholder services plan or (C)
               any other plan or arrangement whereby Classes of New FRF pay a
               different share of other expenses, not including advisory or
               custodial fees or other expenses related to the management of the
               Trust's assets, then (2) the Class B1 Shares of New FRF will not
               convert to the Class A Shares unless the Class B1 Shareholders of
               New FRF, voting separately, approve the increase in expenses. The
               Trustees shall have sole discretion in determining whether such
               increase in expenses is submitted to a vote of the Class B1
               Shareholders. Should such increase in expenses not be submitted
               to a vote of the Class B1 Shareholders or, if submitted, should
               the Class B1 Shareholders fail to approve such increase in
               expenses, the Trustees shall take such action as is necessary to:
               (1) create a new class of New FRF (the "New Conversion Class A
               Shares") which shall be identical in all material respects to the
               Class A Shares of New FRF as they existed prior to the
               implementation of the increase in expenses; and (2) ensure that
               the existing Class B1 Shares of New FRF will be exchanged or
               converted into New Conversion Class A Shares no later than the
               Class B1 Conversion Effective Time. If deemed advisable by the
               Trustees to implement the foregoing, and at the sole discretion
               of the Trustees, such action may include the exchange of all
               Class B1 Shares of New FRF for a new class of New FRF (the "New
               Conversion Class B1 Shares"), identical in all material respects
               to the Class B1 Shares of New FRF except that the New Conversion
               Class B1 Shares will convert into
                                        2
               the New Conversion Class A Shares at the Class B1 Conversion
               Effective Time. Such exchanges or conversions shall be effected
               in a manner that the Trustees reasonably believe will not be
               subject to federal taxation."
     2.   A new Section 2.6C of the Agreement is hereby added after Section 2.6B
          of the Agreement as set forth below:
     "Section 2.6C. Additional Conversion Rights and Preferences of Certain
     Class B Shares. In addition to the relative rights and preferences set
     forth in Section 2.5 and Section 2.6 and all other provisions of this
     Agreement relating to Shares of the Trust generally, any Class of any
     Portfolio designated as Class B Shares that were acquired by (i) exchange
     offer from AFRF (as defined in Section 2.6A(a) of the Agreement), or (ii)
     exchange offer from a Portfolio or any other series portfolio in the AIM
     fund complex if such shares were previously acquired by exchange offer from
     AFRF (the "Legacy Class B Shares") shall have the following rights and
     preferences:
          (a)  Conversion of Legacy Class B Shares. At the Legacy Class B Share
               Conversion Effective Time described in Section 2.6C(d) below, all
               of the issued and outstanding Legacy Class B Shares of any
               Portfolio of the Trust offering Legacy Class B Shares shall
               convert to Class A Shares of the applicable Portfolio based upon
               their respective net asset values, and thereafter shall have the
               attributes of Class A Shares of the applicable Portfolio. All
               issued and outstanding Legacy Class B Shares shall thereafter be
               deemed to be cancelled. The stock transfer books for Legacy Class
               B Shares of a Portfolio will be closed at the Legacy Class B
               Share Conversion Effective Time and only requests for redemption
               of Legacy Class B Shares of a Portfolio received in proper form
               prior to the close of trading on the New York Stock Exchange on
               the date of the Legacy Class B Share Conversion Effective Time
               shall be accepted. Thereafter, redemption requests received by a
               Portfolio for Legacy Class B Shares shall be deemed to be a
               redemption requests for Class A Shares into which Legacy Class B
               Shares were converted.
          (b)  Attribution of Assets and Liabilities. At the Legacy Class B
               Share Conversion Effective Time described in Section 2.6C(d)
               below, the proportionate undivided interest in the net assets of
               a Portfolio attributable to Legacy Class B Shares shall become a
               part of the proportionate undivided interest in the net assets of
               the Portfolio attributable to its Class A Shares, and the
               expenses, costs, charges and reserves allocated to the Legacy
               Class B Shares of a Portfolio immediately prior to the Legacy
               Class B Share Conversion Effective Time shall become expenses,
               costs, charges and reserves of Class A Shares of such Portfolio.
               The Portfolio shall instruct its transfer agent to reflect in the
               transfer agent's records the attribution of the Legacy Class B
               Shares in the manner described above.
          (c)  Shareholder Accounts. At the Legacy Class B Share Conversion
               Effective Time described in Section 2.6C(d) below, each
               shareholder of record of Legacy Class B Shares of a Portfolio
               will receive that number of Class A Shares of such Portfolio
               having an aggregate net asset value equal to the net asset value
               of the Legacy Class B Shares of such
                                        3
               Portfolio held by such shareholder immediately prior to the
               Legacy Class B Share Conversion Effective Time. Each Portfolio
               will establish an open account on its records in the name of each
               Legacy Class B Shareholder to which will be credited the
               respective number of Class A Shares of such Portfolio due to such
               shareholder. Fractional Legacy Class B Shares will be carried to
               the third decimal place. Certificates representing Class A Shares
               will not be issued. The net asset value of the Class A Shares and
               Legacy Class B Shares will be determined at the Legacy Class B
               Share Conversion Effective Time in accordance with the policies
               and procedures of the applicable Portfolio as set forth in its
               registration statement.
          (d)  The conversion of Legacy Class B Shares into Class A Shares shall
               occur July 27, 2006 at 5:00 p.m. Eastern time or such later date
               and time as the officers of the Trust shall determine (the
               "Legacy Class B Share Conversion Effective Time").
          (e)  If, prior to the Legacy Class B Share Conversion Effective Time,
               (1) the Class A Shareholders of a Portfolio approve any increase
               in expenses allocated to the Class A Shares of that Portfolio in
               connection with (A) a Plan of Distribution adopted pursuant to
               Rule 12b-1 under the 1940 Act, (B) a non-Rule 12b-1 shareholder
               services plan or (C) any other plan or arrangement whereby
               Classes of that Portfolio pay a different share of other
               expenses, not including advisory or custodial fees or other
               expenses related to the management of the Trust's assets, then
               (2) the Legacy Class B Shares of that Portfolio will not convert
               to the Class A Shares unless the Legacy Class B Shareholders of
               that Portfolio, voting separately, approve the increase in
               expenses. The Trustees shall have sole discretion in determining
               whether such increase in expenses is submitted to a vote of the
               Legacy Class B Shareholders. Should such increase in expenses not
               be submitted to a vote of the Legacy Class B Shareholders or, if
               submitted, should the Legacy Class B Shareholders fail to approve
               such increase in expenses, the Trustees shall take such action as
               is necessary to: (1) create a new class of that Portfolio (the
               "New Legacy Class A Shares") which shall be identical in all
               material respects to the Class A Shares of that Portfolio as they
               existed prior to the implementation of the increase in expenses;
               and (2) ensure that the existing Legacy Class B Shares of that
               Portfolio will be exchanged or converted into New Legacy Class A
               Shares no later than the Legacy Class B Share Conversion
               Effective Time. If deemed advisable by the Trustees to implement
               the foregoing, and at the sole discretion of the Trustees, such
               action may include the exchange of all Legacy Class B Shares of
               that Portfolio for a new class of that Portfolio (the "New Legacy
               Class B Shares"), identical in all material respects to the
               Legacy Class B Shares of that Portfolio except that the New
               Legacy Class B Shares will convert into the New Legacy Class A
               Shares at the Legacy Class B Share Conversion Effective Time.
               Such exchanges or conversions shall be effected in a manner that
               the Trustees reasonably believe will not be subject to federal
               taxation."
                                        4
     3.   Effective as of July 27, 2006, Schedule A of the Agreement is hereby
          amended and restated to read in its entirety as set forth on Exhibit 1
          to this Amendment effective as of the Class B1 Conversion Effective
          Time as set forth in Section 2.6B of the Agreement.
     4.   All references in the Agreement to "this Agreement" shall mean the
          Agreement as amended by this Amendment.
     5.   Except as specifically amended by this Amendment, the Agreement is
          hereby confirmed and remains in full force and effect.
          IN WITNESS WHEREOF, the undersigned, a duly authorized officer of the
Trust, has executed this Amendment as of July 5, 2006.
                                        By: /s/ ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇
                                            ------------------------------------
                                        Name: ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇
                                        Title: President
                                        5
                                                                Sub-Item 77Q1(a)
                          EXHIBIT 1 TO AMENDMENT NO. 3
                                       TO
        SECOND AMENDED AND RESTATED AGREEMENT AND DECLARATION OF TRUST OF
                           AIM COUNSELOR SERIES TRUST
                                   "SCHEDULE A
                           AIM COUNSELOR SERIES TRUST
                         PORTFOLIOS AND CLASSES THEREOF
PORTFOLIO                            CLASSES OF EACH PORTFOLIO
---------                            -------------------------
                                  
AIM Advantage Health Sciences Fund   Class A Shares
                                     Class B Shares
                                     Class C Shares
                                     Institutional Class Shares
AIM Floating Rate Fund               Class A Shares
                                     Class C Shares
                                     Class R Shares
                                     Institutional Class Shares
AIM Multi-Sector Fund                Class A Shares
                                     Class B Shares
                                     Class C Shares
                                     Institutional Class Shares
AIM Structured Core Fund             Class A Shares
                                     Class B Shares
                                     Class C Shares
                                     Class R Shares
                                     Institutional Class Shares
AIM Structured Growth Fund           Class A Shares
                                     Class B Shares
                                     Class C Shares
                                     Class R Shares
                                     Institutional Class Shares
AIM Structured Value Fund            Class A Shares
                                     Class B Shares
                                     Class C Shares
                                     Class R Shares
                                     Institutional Class Shares"
                                       A-1