398.The days and parts of a day forming part of a period during which an employee who is a member of this plan was exempted, immediately before 1 January 2001, from the payment of any contribution pursuant to section 21 of the Act respecting the Government and Public Employees Retirement Plan (chapter R-10) must be taken into account for the purposes of the limit of three years of service provided for in section 34 of this Act that is applicable to the days and parts of a day that may be credited to the employee under that plan without contributions.