Originally Posted by
MadManMoon
Unfortunately, yes. I had a brain fart and created the account in order to save, view, and edit the reservation...not realizing until it was too late that I could just manually look it up via PNR. I have no intention of ever earning AA miles, preferring to remain with BA.
You will have to call in to replace the AA number with the BAEC number. It can be convenient to use the AA number to create and manage the booking and then change the number near the flight time but probably not if you want to choose better seats.