Hi there, I tried searching but couldn't find an answer to this, though I am sure it must have been asked in the past. If I apply a BXP1 upgrade to a reservation and then do a same day confirmed flight change, what happens to the upgrade? Am I considered a F passenger and it is carried over to the new flight regardless of C space? Or am I downgraded back to Y? If the latter, does the BXP1 cert get refunded/returned?

Thanks for any help you can provide.