20.2. Where section 17 of the Act respecting the Pension Plan of Peace Officers in Correctional Services (chapter R-9.2) applies, the service established under sections 19 and 20 is credited up to one year in excess of the service credited under the Pension Plan of Peace Officers in Correctional Services. Where section 33 of the Act respecting the Pension Plan of Management Personnel (chapter R-12.1) and section 17 of the Act respecting the Pension Plan of Peace Officers in Correctional Services apply, the service established under sections 19 and 20 is credited up to one year in excess of the total service credited under sections 15 and 16 of the Act respecting the Pension Plan of Peace Officers in Correctional Services and sections 31 to 33.1 of the Act respecting the Pension Plan of Management Personnel. The pensionable salary attached to pensionable employment under this plan is the salary determined in accordance with Division I of this chapter, multiplied by the service credited under the first or second paragraph over the service established under sections 19 and 20.