50. Sections 20 and 21 of the Act respecting pension coverage for certain teachers (chapter P-32.1) continue to apply with respect to a person or, as the case may be, a beneficiary who, on 25 June 1986, is receiving benefits under the said Act in accordance with the election made by the person under section 18 of the said Act even if the most advantageous amount within the meaning of section 48 is not the amount computed under the Act respecting pension coverage for certain teachers. In that case, section 32 of this Act does not apply to that amount.