Originally Posted by marbles dad
Where do i begin to sort this out?
You contact the carrier that has your miles posted, in this case AA.
Enclose a copy of the bp, the account numbers, and explain that the credits have been split.
Advise that the mileage credits were to go into the BA FF account. AAdv will remove from AAdv and send a transmittal to BA authorizing them to post those segments.
Good luck.