For the purposes of section 26 of and Schedule 7 to the [1993 c. 8.] Judicial Pensions and Retirement Act 1993 (date of retirement for holders of a relevant office immediately before the time when section 26 came into force) a person who held the office of stipendiary magistrate or metropolitan stipendiary magistrate at any time during the period beginning when section 26 came into force and ending when Schedule 11 to this Act comes into force shall be treated as having held a relevant office at that time in spite of the amendment made to Schedule 5 to the Judicial Pensions and Retirement Act 1993 by Schedule 11 to this Act.