The rating on Merrill Lynch Puttable FLOATs/RITES Trust puttable floating option tax-exempt receipts series PT-372A and PT-372B, relating to District of Columbia general obligation bonds series 1999A, has been affirmed following an amendment to the trust documents. The long-term component of the rating is based on the MBIA-insured underlying bond. The short-term component of the rating is based on Merrill Lynch&Co. Inc. The expiration date of the liquidity facility is Oct. 15, 2007. The stable outlook is based on the outlook of the bond insurer.