In this Part, a reference, in relation to a person who has ceased to be a member, to a member benefit, or to the part of a member benefit, that is totally funded is a reference to a member benefit, or to that part of a member benefit that consists only of:
(a) contributions that have been paid by the person to CSC on or after the day on which the person became, or last became, a member; and
(b) the interest on those contributions.