Trying to figure out how to credit split flights to different programs. I flew on an AA ticket, and I had two BA flights on it among some AA flights. I initially had both BA flights set to auto-credit to AA, but seeing as that failed, I'm going to request a retro credit. I'm thinking I would like to credit one of those two flights to BA as I'm switching loyalties, but I'm unclear - if I put in the ticket # in the Missing Avios form, will it auto-claim ALL flights from that ticket, or will I have the option to select some flights? I absolutely must credit one of the flights to AA, but the other can go to BA. Thanks for any advice on how to do this properly.