412. The years and parts of a year of service credited or counted under the Government and Public Employees Retirement Plan to a person who ceased to be a member of that plan between 31 December 1996 and 1 January 2001 while he or she was governed by the special provisions enacted under Title IV.0.1 of the Act respecting the Government and Public Employees Retirement Plan (chapter R-10) shall, notwithstanding section 138 of this Act, be credited or counted under this plan on 1 January 2001. If, on the date on which the person referred to in the first paragraph ceases to be a member of the plan, the person has not completed the 24-month period provided for in section 4 or 5 of the Regulation respecting special provisions applicable to non-unionizable employees, enacted by Order in Council 787-97 (1997, G.O. 2, 3335), and the person holds pensionable employment under the Pension Plan of Management Personnel, Chapter I of this Act applies.