Hi
Thanks for that
I've not yet booked or started the planned trip
and will call the AA RTW ticketing desk to see what they have to say ... I appreciate what you're saying if the deal is crediting what is left after deducting the one way fares for what has already been travelled ...
I am not sure what the phrase means in the Rules -
Where such credit is towards another Explorer fare, retroactive use will be permitted..
I will see if I can get clarification and presumably try and get some sort of written confirmation if it is upgradeable ?