Originally Posted by
DirektornSE
Huh!
Revenue upgrades are eligible (on real "F" flights) - But "Technical" upgrades are not.
Yep as
KingCanute says, the only way a j to f “upgrade” gets AS lounge access is if the ticket is repriced to the new fare class (either A or F). In this case, it seems like a paid upgrade offer, which doesn’t include AS access.