(1) If a person ceases to be a member and, immediately after so ceasing, again becomes a member:
(a) the person is taken, for the purposes of this Act other than paragraph (b), not to have so ceased; but
(b) the person is not required or permitted to pay contributions in respect of the period between the time when the person ceased to be a member and the time when the person again becomes a member.
(2) Subsection (1) does not prevent the Rules from making provision subject to which a person of a specified class who has ceased to be a member may, on again becoming a member, be taken not to have ceased to be a member.