Ok, so I'm flying MSP-LAX-LAS. LAX-LAS cleared CPU and show CPU Requested on MSP-LAX. Inventory on MSP-LAX is R2.
But when I go to upgrade flights, both the miles and RPU/GPU options are greyed out. Can I not apply an RPU online if I've already CPU'd a segment?
On the way back, I'm LAS-LAX-MSP. There is availability LAS-LAX, but waitlist LAX-MSP. I assume if I apply the RPU now, I'll get upgraded LAS-LAX right away, but will still burn it even if I don't make LAX-MSP, correct?