(1) In the case of a retired member of a superseded system who elected an optional form of benefit, the increase in the member's retirement allowance determined under § 8-36-708 or § 8-36-709 shall be adjusted on the basis of the appropriate actuarial equivalent factor applicable at the time of retirement, and payment of the additional allowance shall be subject to the terms of the option elected.
(2) In the case of beneficiary of a deceased member of a superseded system in receipt of a retirement allowance as the person designated under an election of an optional form of benefit, the increase in the retirement allowance to such beneficiary shall be determined as if the member had been living on July 1, 1972.