Originally Posted by
boat9781
channa, I was under the impression that even though EUA might 'choke' due to an 'out-of-sync' reservation, the system simply stops upgrading passengers at this point—or until the issue is resolved. I know for one that last year I had a messed up ticket, and the agent said that I was probably the reason why EUA hadn't run (because the system simply stopped rather than skip over me).
Is my understand of the system correct?
Thanks!
My understanding is that this used to be the case several years ago, but then they modified it so that it skips over the problem record and keeps going (otherwise no advance upgrades would run on so many flights).
Perhaps
UA Insider can confirm.