Sub-Item 77Q1(a)
                                 AMENDMENT NO. 6
                                     TO THE
        SECOND AMENDED AND RESTATED AGREEMENT AND DECLARATION OF TRUST OF
                           AIM COUNSELOR SERIES TRUST
     This Amendment No. 6 ("Amendment") to the Second Amended and Restated
Agreement and Declaration of Trust of AIM Counselor Series Trust amends,
effective as of October 16, 2007, the Second Amended and Restated Agreement and
Declaration of Trust of AIM Counselor Series Trust (the "Trust") dated as of
December 6, 2005, as amended, (the "Agreement").
     Under Section 9.7 of the Agreement, a duly authorized officer of the Trust
may execute this Amendment.
     WHEREAS, the Trust desires to amend the Agreement to reflect the addition
of Investor Class Share of AIM Structured Core Fund;
     NOW, THEREFORE, the Agreement is hereby amended as follows:
     1. Schedule A of the Agreement is amended and restated to read in its
entirety as set forth on Exhibit 1 to the Amendment.
     2. All references in the Agreement to "this Agreement" shall mean the
Agreement as amended by this Amendment.
     3. 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 October 16, 2007.
                                        By: /s/ ▇▇▇▇ ▇. ▇▇▇▇
                                            ------------------------------------
                                        Name: ▇▇▇▇ ▇. ▇▇▇▇
                                        Title: Senior Vice President
                          EXHIBIT 1 TO AMENDMENT NO. 6
                                       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 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 Select Real Estate Income 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
                                     Investor 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"