I'm flying tomorrow and burned a RUC. It cleared at booking. Today I made a SDC to a later flight. The agent made the change but said the RUC wouldn't clear immediately, which I expected.
When I login to delta.dumb and look at my PNR, I see "Upgrade Status: Upgrade Waitlisted". When I click on "VIEW UPGRADE & STANDBY LIST" I see myself on the C+ upgrade list but not the FC upgrade list.
I see the same thing in the iOS app.
I called in and the agent said it's just a display issue and "you're definitely on the list."
Opinions on what will happen tomorrow? My guess is this will get straightened out at the gate.
You've should've been booked into F. Once cleared you don't need to reclear for SDC. That only applies for free unlimited upgrades.