Originally Posted by
ISTFlyer
Also a reminder that do not use your AAdvantage number on AA bookings if you are planning to credit AA flights to BAEC in the future.
American wouldn't detach any AAdvantage number over a partner FFP, thus you shouldn't save any of your reservations to your AAdvantage account or use AAdvantage benefits when flying AA. This does not apply for BA flights but AA has a strict rule which doesn't allow cross-benefiting on their own flights.
I have had luck doing this for my husband. I wait until right before he wants to check-in. I call the general Aadvantage number and when the automated system asks for his AA number, I say that I don't have one. I then get routed to a general number where they do not seem to know the rules. I ask to have them change his AA number to his BA number. I have done it about 4 times in the past year and his seat assignment remained, but he did lose priority boarding.
Last edited by sbgmiles; Jul 2, 2021 at 8:03 pm
Reason: left out a word