; (6) by redesignating paragraph (6) as paragraph (8); (7) by striking paragraph (5) and inserting the following: (5) (A) Concurrently with each computation or recomputation under paragraph (3), the United States Postal Service shall compute the amount, as of the date of the computation, that is equal to the difference between— (i) the Postal Service actuarial liability as of September 30 of the preceding fiscal year; and (ii) the value of the assets of the Postal Service Retiree Health Benefits Fund as of September 30 of the preceding fiscal year. (B) If the United States Postal Service disposes of any property owned or leased by the United States Postal Service, and, based on the most recent computation under subparagraph (A), the amount described in clause (i) of that subparagraph is greater than the amount described in clause (ii) of that subparagraph, the United States Postal Service shall pay into the Fund the lesser of— (i) the amount of net profit to the United States Postal Service resulting from the disposal of property (as determined by the Postal Regulatory Commission); or (ii) the amount computed under subparagraph (A). (C) The United States Postal Service shall make each payment required under subparagraph (B) without regard to whether the United States Postal Service has completed the annual installment payments required under paragraph (4)(B)(ii), as scheduled under paragraph (3)(A). (6) Computations under this subsection shall be based on— (A) economic and actuarial methods and assumptions consistent with the methods and assumptions used in determining the Postal surplus or supplemental liability under section 8348(h)