Originally Posted by
exerda
I believe the OP had a schedule change which resulted in a less-desirable itinerary (due to FLL being closed as a UA station, I would guess), and the agent who handled the rebooking put the OP in F as a compensation for the re-route to MIA.
that's the thing, I don't know if that's a legitimate upgrade (4 months in advance no less) that a regular phone agent is allowed to do without it being kicked out of the system (if the flight is not full, etc). I think the system will sweep for things like this. Unless it was approved by a supervisor for example.