I'm looking at booking a DONE4 ticketed on AA stock where I want to switch from my BA number through to a QF number for some of the middle segments and then back to BA for the latter third of the trip.
Previously when I've booked through QF the change is trivial and QF staff are more than happy to change your frequent flyer number multiple times on a DONE4 so that you can credit different segments to different programs, and you can use the RJ/AY manage my booking codes
However, in my experience, AA is a little less forthcoming with allowing you to change the FQTV part.
If I can get the Amadeus booking code for my AA stock DONE4, could I maybe be able to change it on the AY/RJ sites? Or do I need to have someone like QF take over the booking to do this? Or would AA just allow me to update the frequent flyer number twice part way through the itinerary if I try a few times?