Originally Posted by
sts603
So just following up on this. Is there any reason I couldn't book say a fully refundable trip from LHR-DUB or something in Y, use the joker to UuA to J, and then change it to something else entirely later after the joker expired (e.g., a TATL WT+ ticket UuA'ed to J).
You would be cancelling the ticket so you would lose the Joker.