(1) Subject to these Regulations, where a serving employee referred to in section 75 of the Superannuation Ordinance made an election under section 74 of that Ordinance to become a contributor under that Ordinance:
(a) he shall be deemed to be a contributor for the units granted to him under paragraph 75(1)(a) or subsection 75(3B) of that Ordinance, and he shall continue to contribute for those units; and
(b) the provisions of section 75 of that Ordinance shall continue to apply to him, mutatis mutandis , in so far as they are applicable.
(2) Such an employee is not permitted to vary an election he made or was deemed to have made under section 74 of the Superannuation Ordinance.