Hello,I’m not sure if this is the right forum or perhaps this is more BA problem but anyhow I’m BAEC Gold / OWE and trying to make seat selection (C/I) for a few flights operated by AA (LHR-JFK, JFK-SFO, JFK-LHR) but ticketed by BA. I have three (!) PNRs and neither of them seem to work. Checking my trip on AA website (AA PNR) gives me access to the reservation and I can see preselected seats (far from optimum) but there is no way to make changes. On BA website using the secondary BA/AY PNR I can see the same reservation but when I try to make changes, I’m redirected to AA website and given a third PNR ("BA website: American Airlines reference:XXXXX") which however is not recognized by AA! Is there a way to change seat on these mixed tickets or should I just wait for the check-in open and see what’s available then?