286.1. With the exception of the application for review referred to in section 286 which remain subject to the Act respecting supplemental pension plans (chapter R-17), and subject to the provisions of sections 308.2 and 311.1, any applications for review pending before the Régie on 1 January 1993, or introduced after that date and relating to decisions rendered before that date, shall be decided according to the provisions of this Act as they read before that date.