What am I doing wrong?
I've a couple of GUFs to use, want to use them on a new cash booking to upgrade from WTP to CW. My understanding from the top of the thread is that as long as there is availability in "I" I should be able to do this direct with BA.
Attempting to redeem on BA shows zero availability, despite ExpertFlyer showing 9 available seats at the I fare for both flights that day (LON-LAS 10 Oct for reference).
Am I missing something?