Be aware that oneworld flights with an Amadeus booking record locater cannot be added to your BA list. Only BA flights and BA flights booked through BA will ever show in this list.
Have you put the record locator into the AA website? Does it work correctly there? Not that whilst AA uses Sabre, you can't use the Sabre virtually there website. AA hides is reservations via this access method in the same way that AF and KL have access restrictions with Amadeus.
Also be aware that the AA recloc cannot just be input into the Amadeus check my trip website. The AA and BA (and QF) websites now accept each other's record locators however.