Originally Posted by
oliver2002
For rebooking onto other airlines they can't use the AV ticket as the other carrier may refuse transportation even under IATA irreg arrangements.
In my experience they can and do this: TG rebooked my BMI award ticket onto GA (they gave me a paper FIM), UA on TK award gave me an option to rebook onto AF on the same day or onto AC the following morning (plus hotel/meal vouchers) - I had some excess baggage, so had chosen overnight plus AC (they actually reissued the ticket - the new one was on UA 016 plate).