Originally Posted by
ChristchurchParkBlue
....Having done everything through BA so far, I assumed I'd have to continue that, even though the extra flights I want will be with AA.
No. But AA tend to want over water intercontinental flights, which can include AA codeshares, to be interested. Worth a phone call to AA RTW desk. But AA may not be willing to take over management of your ticket. Are you in USA now?
What was the route as booked? What route do you now want?