Originally Posted by
beamac
Can you use a joker to free up 'A' redemption space on domestic US legs of a TATL booking so that a GUF can be extended to cover these legs? GUF is already on the TATL leg. BA Booking has BA codeshare AA website has AA prime on booking
AA website will always show the AA codes but if the booking was made with BA then MMB on ba.com will tell you whether booked as AA or BA codeshares.
To use a GUF you would have to change the booking code to the AA code as the first step, then you need some kind of elusive AA upgrade sub-A bucket fare availability to use a GUF.
Some people seem to be able to do this easily and others not so easily, my suspicion has always been that it is slightly customer service rep-dependent, I have always had very good experiences.
As
KARFA says, unfortunately you can't use the Jokers to help with this.