On the one hand, I understand where BA is coming from (even though retro-adjustment does seem rather petty and guaranteed to P people off...)
On the other hand, they havve in practice devalued the GUF by quite a bit, so from now on I simply won't bother spending any extra to obtain them.
Indeed, next year (from 09/03/20) is currently completely unbooked and I doubt I'll be doing any TP runs at all now...
It actually makes sense for me to only fly where I actually want to go 😀