Hi. The question might seem obvious, but I can't find a direct answer on the *A page.

I have a *G in SAS, but I booked a flight in M&M airline. Do I *have to* use my EB number in the FF for this flight in order to get the *G benefits? (I'd prefer to use M&M number in the FF for this flight unless it'd deprive me from the *G benefits...)

thanks