13. Nothing in this Order shall affect the operation of any rules made under section 38 or 43(1) of the Superannuation Act (Northern Ireland) 1967 [1967 c.24] and any such rules in force at the commencement of this Order shall, unless and until revoked, but subject to any amendments made therein in exercise of the power to vary them, continue to have effect as if this Order had not been made.N.I.