One can falsify / duplicate BPs, but I keep a copy of my BP as marked by airport security to copy / fax until my itinerary posts in its entirety. It can make a difference, as stated above - easier for an AAer to manually enter the data with sufficient proof on occasions than waiting for other layers of the onion to respond.
It's also crucial to retain ticket numbers - PNR designators are recycled, so not so much use.
IME, BA "customer service" for non-BAEC members at least, can be illusory at best.
Originally Posted by
tkelvin69
Do they still do this? Given you can check-in and print a BP any place in the world it doesn't make much sense. It seems the ITN/locator referenced to the manifest would get the needed results.