7. Any extension of service under section 7(1) of the Local Government Superannuation Act 1937 as originally enacted or as modified by paragraph 4 of Schedule 3 to the Local Government Superannuation Act 1953 effective immediately before 1st April 1965 in relation to an officer transferred by or under Article 2 shall continue to have effect as if it had been made by the authority to whose employment he is transferred as aforesaid.