; (2) by redesignating paragraph (4) as paragraph (5); and (3) by inserting after paragraph (3) the following: (4) Additional amounts (A) Calculation If the dollar limitation specified in paragraph (3)(A) exceeds the aggregate amount required to be transferred under paragraphs (1) and (2) for a fiscal year, the Secretary of the Treasury shall transfer an additional amount equal to the difference between such dollar limitation and such aggregate amount to the trustees of the 1974 UMWA Pension Plan to pay benefits required under that plan. (B) Cessation of transfers The transfers described in subparagraph (A) shall cease as of the first fiscal year beginning after the first plan year for which the funded percentage (as defined in section 432(j)(2) of the Internal Revenue Code of 1986) of the 1974 UMWA Pension Plan is at least 100 percent. (C) Prohibition on benefit increases, etc During a fiscal year in which the 1974 UMWA Pension Plan is receiving transfers under subparagraph (A), no amendment of such plan which increases the liabilities of the plan by reason of any increase in benefits, any change in the accrual of benefits, or any change in the rate at which benefits become nonforfeitable under the plan may be adopted unless the amendment is required as a condition of qualification under part I of subchapter D of chapter 1 of the Internal Revenue Code of 1986. (D) Critical status to be maintained Until such time as the 1974 UMWA Pension Plan ceases to be eligible for the transfers described in subparagraph (A)— (i) the Plan shall be treated as if it were in critical status for purposes of sections 412(b)(3), 432(e)(3), and 4971(g)(1)(A) of the Internal Revenue Code of 1986 and sections 302(b)(3) and 305(e)(3) of the Employee Retirement Income Security Act; (ii) the Plan shall maintain and comply with its rehabilitation plan under section 432(e) of such Code and section 305(e) of such Act, including any updates thereto