Originally Posted by sanfran767

Thanks for your reply and advice--depending on how this plays out, I may simply consider sticking this out through the merger. However, after reading your post, I immediately called AA Plat and this is what they tell me in this specific case:

The last leg of my flight is booked on AA metal on a BA itinerary as BA4329, JFK-SFO on a B fare. They told me that there is absolutely no way to upgrade me in either system--I cannot upgrade in AA because it was not booked through them, and I cannot upgrade via BA because their milage program is different. Is that inconsistent with your experience or am I going about this the wrong way?