Sub-Item 77Q1(a)
                                AMENDMENT NO. 10
                         TO SECOND AMENDED AND RESTATED
                      AGREEMENT AND DECLARATION OF TRUST OF
                           AIM COUNSELOR SERIES TRUST
          This Amendment No. 10 (the "Amendment") to the Second Amended and
Restated Agreement and Declaration of Trust of AIM Counselor Series Trust (the
"Trust") amends, effective April 14, 2009, the Second Amended and Restated
Agreement and Declaration of Trust of the Trust dated as of September 14, 2005,
as amended (the "Agreement").
          Under Section 9.7 of the Agreement, this Amendment may be executed by
a duly authorized officer of the Trust.
          WHEREAS, the Trust desires to amend the Agreement to change the name
of AIM Core Plus Fund to AIM Core Plus Bond Fund;
          NOW, THEREFORE, the Agreement is hereby amended as follows:
     1. Schedule A of the Agreement is hereby amended and restated to read in
its entirety as set forth on Exhibit 1 to this 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 April 14, 2009.
                                        By: /s/ ▇▇▇▇ ▇. ▇▇▇▇
                                            ------------------------------------
                                        Name: ▇▇▇▇ ▇. ▇▇▇▇
                                        Title: Senior Vice President
                                   EXHIBIT 1
                                   SCHEDULE A
                           AIM COUNSELOR SERIES TRUST
                         PORTFOLIOS AND CLASSES THEREOF
              PORTFOLIO                 CLASSES OF EACH PORTFOLIO
              ---------                 -------------------------
                                     
AIM Core Plus Bond Fund                 Class A Shares
                                        Class B Shares
                                        Class C Shares
                                        Class R Shares
                                        Class Y Shares
                                        Institutional Class Shares
AIM Floating Rate Fund                  Class A Shares
                                        Class C Shares
                                        Class R Shares
                                        Class Y Shares
                                        Institutional Class Shares
AIM Multi-Sector Fund                   Class A Shares
                                        Class B Shares
                                        Class C Shares
                                        Class Y Shares
                                        Institutional Class Shares
AIM Select Real Estate Income Fund      Class A Shares
                                        Class B Shares
                                        Class C Shares
                                        Class Y Shares
                                        Institutional Class Shares
AIM Structured Core Fund                Class A Shares
                                        Class B Shares
                                        Class C Shares
                                        Class R Shares
                                        Class Y Shares
                                        Institutional Class Shares
                                        Investor Class Shares
AIM Structured Growth Fund              Class A Shares
                                        Class B Shares
                                        Class C Shares
                                        Class R Shares
                                        Class Y Shares
                                        Institutional Class Shares
                                     
AIM Structured Value Fund               Class A Shares
                                        Class B Shares
                                        Class C Shares
                                        Class R Shares
                                        Class Y Shares
                                        Institutional Class Shares