Originally Posted by
Andriyko
I believe the TA can and must make the changes. They should also contact BA to reinstate the voucher. There may not be space in the upgraded cabin on the new flight, but it is still the responsibility of the travel agent to service the ticket.
My corporate TA refuses to touch tickets upgraded with a Gold Upgrade Voucher. Not sure if it’s how they are supposed to behave, but they are one of the big ones so I assume it’s not uncommon. I have changed dozens of these throughout the years, but have always gone through BA (with the aforementioned need of storing the fare and penalties if prior to departure, and way more easily if the first sector was already flown).