(2) Notwithstanding any other provision of law to the contrary, if a pension reserve fund shall be established by law for a pension or retirement system of a paid fire department of a city having a population of one million or more, the funds of which pension or retirement system did not, prior to July first, nineteen hundred eighty, include a pension reserve fund, payment of all supplemental retirement allowances which, for the month of July, nineteen hundred eighty or any subsequent month preceding the month in which the date of enactment of this section occurs, were payable pursuant to section two hundred seven-i of this chapter, as added by chapter five hundred forty-six of the laws of nineteen hundred sixty-seven, to any pensioner who retired as a member of such pension or retirement system wherein a pension reserve fund is established, and whose employment in such fire department began on or after March twenty-ninth, nineteen hundred forty, shall be deemed to have been the obligation of the pension reserve fund and such pension or retirement system and payment of such supplemental retirement allowances to any such pensioners for any subsequent month shall be the obligation of such pension reserve fund.

(3) With respect to payments of any such supplemental retirement allowances which are referred to in subdivisions one and two of this section and which were made for the month of July, nineteen hundred eighty or any subsequent month preceding the month in which the date of enactment of this section occurs, the actuary of any such pension or retirement system referred to in such subdivisions shall determine the adjustments, if any, which, by reason of any such payments, the applicable provisions of such subdivisions require to be made between the funds of the pension reserve fund of such pension or retirement system and the funds of the supplemental pension fund of the city wherein such system functions, and any such adjustments so determined shall be carried out by resolution of the board of trustees of such pension or retirement system and executive order of the mayor or other chief executive officer of such city.

(4) Notwithstanding any other provision of law to the contrary, all payments of additional supplemental retirement allowances pursuant to section thirty or section thirty-one of chapter six hundred fifty-eight of the laws of nineteen hundred eighty-four to any pensioner of a pension or retirement system of a paid police department of a city having a population of one million or more whose employment in such department began on or after March twenty-ninth, nineteen hundred forty, shall be the obligation of the pension reserve fund of such pension or retirement system.

(5) Notwithstanding any other provision of law to the contrary, all payments of additional supplemental retirement allowances pursuant to section thirty or section thirty-one of chapter six hundred fifty-eight of the laws of nineteen hundred eighty-four to any pensioner of a pension or retirement system of a paid fire department of a city having a population of one million or more whose employment in such department began on or after March twenty-ninth, nineteen hundred forty, shall be the obligation of the pension reserve fund of such pension or retirement system.