Originally Posted by Flying for Fun

I would leave you AA FF# on the reservation for the check baggage waiver and then either in the Lounge or at the gate have an agent change it to your AS FF#. Even when they change your FF#, AA still retains theirs in the record. Request that the AA FF# also be removed. My experience is that if the AA FF# isn't removed, automatic credit to AS may be hindered.

James