I recently purchased a UA Codeshare flight operated by Continental from EWR to DEN in December and a UA Flight from DEN to GEG the same day. I upgraded the DEN to GEG flight with United directly. Because of this, my reservation is now out of sync on the Continental end. I spoke with the CO Elite desk and they have said that the reservation is in fact out of sync and need to contact United to have the ticket reissued. I spent approx 1 hour on the phone with United and they won't reissue the ticket since what I purchased was premium seating and not a buy up to a first class fare. They only 'reissue' tickets if you buy up to a full first class fare or use miles to upgrade.

Since the reservation is out of sync on CO's end, will this affect my ability to be EUA'd for the flight? Will there also be problems when checking in? (I think so).

I don't really want to spend the time on the phone with the United CS as they have not really provided me with any answers/ assistance on this matter. I don't know if this piece is more of a question for the UA forum but is this their policy on these so called 'premium seating' buy ups? They don't reissue the ticket? Seems kind of strange to me but I don't really want to waste my time dealing with it unless it has an effect on the CO flight and the EUA run.