When I was flying AA, it was around 5 years ago. On my first AA flight(to Chicago) I presented my BA card and was told I could not earn BA miles on an AA transatlantic flight. As a result I opened up an AAvantage account to collect those miles.
I have around 100,000 miles with AA and was hoping to transfer them, but it looks like that wont be possible 🙁
THanks for your help