What is the difference between upgraded requested and upgrade waitlisted? I used PP to upgrade some family members on separate reservations. However, one res says upgrade requested and when you hover over it, it says upgrading with MileagePlus award . This also show an extra segment of the same flight that shows PZ waitlisted as opposed to the regular segment with upgrade requested designation.

Another reservation on the same routing says upgraded waitlisted and hovering icon says PP upgrade.

Any insight?