Originally Posted by
Mwenenzi
Do not see that working when booking (for self) using own AS ff miles, as reservation will be populated with AS details from log in. On AA people book for "an other" instead of self, so the "other" ffn's details can then be entered. No idea if that is possible with AS awards.
Yes it will. Using the BA PNR the OP can change the FFP on the AY MMB - so remove AS FFP number, and put in AA FFP number.