Originally Posted by chronicrelief

Todsy I was trying to SDC a ticket I had upgraded with cash from Y after booking, and to my surprise after the ticket was reissued I was able to immediately select seats in the first class cabin. Reservation shows C fare class and not OU which seems to indicate it was not an immediate complimentary upgrade. I was under the impression that all upgrades were lost on voluntary changes (and indeed a previous agent told me as such). Was this just an agent error in my favor? Happened over text messaging support if that changes anything.