(1) Where the member spouse is a deferred pensioner of the defined benefit scheme concerned at the date of the order, the designated benefit payable from that pension scheme shall be calculated in accordance with this article.
(2) The designated benefit shall be calculated in accordance with the formula in article 7(2) except that:
A = the amount of retirement benefit which becomes payable in accordance with the rules in force (excluding any such benefit secured by additional voluntary contributions or which represents a transfer of accrued rights from another pension scheme);
C = the period of retirement benefit service which the member spouse has completed to the date of the member spouse's termination of reckonable service.