Notwithstanding any provision of section
1437g of this title or any regulation under such section, and subject to the exception provided in paragraph (3), the portion of the amount received by a public housing agency under section
1437g of this title that is due to an allocation from the Operating Fund and that is allocated to a public housing project managed by a resident management corporation shall not be less than the public housing agency per unit monthly amount provided in the previous year as determined on an individual project basis.