Originally Posted by ethan
Not according to what I've read on FT and also confirmed by an AA EXP agent. It has to be on AA stock.
If anyone knows differently from experience I'd love to hear about it. It would make it much easier for me!
This is news to me. I am pretty sure that I upgraded an AA segment on a DONE4 ticket issued by BA in the past. It may be, however, that the ticket was reissued by AA first, but I don't think so. Can anyone confirm that the ticket must be on AA stock?