Originally Posted by
Kacee
Those are not technically speaking upgrade priority rules that I understood RM to be referencing.
That's an anomaly based on GS upgrades clearing into a different fare bucket (which has always existed).
It's effectively the same thing, though. It's entirely possible that a 1K on an O, A, R fare clears ahead of a GS on a Y fare at the gate, but that would be extremely unlikely
prior to the gate even if there's no difference in the order of the lists, because UA will likely open PN space first.