Originally Posted by
night718
I purchased roundtrip tickets for JFK-BOS-NRT-CGK on AA+JAL through Amex IAP. I'm just wondering where should I credit the miles if I want to use them in the future for travel from NYC to Asia in business class.
Since you cannot be certain that available award routings in the future would not require a combination of AA and JL flights, it would seem safer to credit to AA, since AS awards would not permit you to combine both of those carriers on a single award.