Originally Posted by 4BandE
Where does the clearing of an upgrade with a purchase of a Y fare for a 1K fall...
If a Y-UP fare, it should book into FC on the P bucket (ok, no pee bucket jokes now

)... If there is no P inventory at booking, I don't know...
If it is one of the Y fares that carry the complimentary upgrade, what
SEA_Tigger said is the case.