The rights, duties, and liabilities of the City of Burlington and of the Town of South Burlington, by reason of the conversion of the Town of Burlington into said two municipalities, shall remain as provided by section 31 of this charter entitled "An act to incorporate the City of Burlington," approved November 22, 1864, and the agreement said City and Town made by virtue of such section on the 15th day of March, 1865. All the books of record, papers, and documents belonging to the Town of Burlington at the time the City of Burlington was organized shall continue to be deposited and kept in the office of the Chief Administrative Officer of said City, copies of which, duly certified by said Chief Administrative Officer, shall be legal evidence for all purposes for which they would have been evidence if said City had not been created, and they had been duly certified by the Clerk of the Town of Burlington.