So I'm doing my first SDC ever now that I am MVP Gold for me and my traveling companion. We got upgrade to First class for the 6:30 am flight (SEA-LAX) and am going to SDC change for a later flight. Any tips on how to do this and get properly placed on the upgrade list of the new flight? I know there were issues in the past and wanted to know if they had ever mostly fixed the SDC/upgrade re-list issue.