147.9. An employee who was redeeming years of service on 31 December 2004 under sections 25, 27, 29 to 33, 35, 37 or 40, as they read before 1 January 2005, continues to pay the cost of the redemption under conditions in force on that date, and sections 22, 23 and 39, as they read before 1 January 2005, continue to apply for the years redeemed.