For as long as you draw a pension on the basis of your scheduled months or monthly days off work, your pension will be uprated each year at the upward adjustment rate for pensions (rapport des IVP) which is set forth by article R6527-48 of the French transport code, with no change to the factors used to calculate your partial claim for entitlements.
You can refer to informational guide “Retiring through the alternating work-retirement program (as from January 1st, 2019)”.