Age recalculation of primary applicant after adding spouse post ITA

Hi, I have got a query regarding the " Recalculation of CRS points" after adding spouse post ITA.
Do they recalculate the age of Primary applicant, when they add their spouse after ITA?? or they consider the age of the primary applicant at the time of ITA?

A little background:
Got ITA on 2nd September 2020( Spouse non-accompany), on 30th September had my 30th birthday, now I am skeptical about which age IRCC will take in consideration, the one at the time of ITA or later one in the whole recalculation part after adding the spouse.

Please help!!!