If legislation is adopted providing for a blanket increase in the original retirement allowances, pensions or survivorship benefits or for minimum allowances, pensions or benefits to any group of retirants or beneficiaries eligible for benefits under P.L.1964, c.275 (C. 43:13-22.50 et seq.), other than legislation which shall have been enacted on or before the effective date of P.L.1990, c.20 (C. 43:13-22.69 et al.), all increases provided under this act shall be terminated on the first of the month when such blanket increases or minimum allowances, pensions or benefits are payable, except in those instances where the retirant’s or beneficiary‘s original allowance, pension or benefit plus the increases provided under this act will exceed the amounts payable to such retirant or beneficiary as a result of such other legislation; in such event the amount payable under this act shall be the difference between the new allowance, pension or benefit payable by the pension fund and the amount which would otherwise have been paid under this act. Any subsequent annual review of amounts payable under this act for such retirants and beneficiaries shall continue to be determined on the basis of the original allowance, pension benefit as granted by the pension fund prior to any blanket increase or provision for minimum retirement allowances, pensions or survivorship benefits for any group of retirants or beneficiaries eligible for benefits under this act.

L.1990,c.20,s.12.