Originally Posted by
RobOnLI
Totally normal and does not signify any EUA problem.
I'm betting that at around the 3 hour mark before the flight 6 to 8 of those remaining FC seats were given out to upgrades and the upgrade list got a lot shorter. I've seen it happen MANY times and it's the norm for CO.
-RM
Yes, and it does not require making any phone calls. The upgrades are processed automatically based on priority, not based on who happens to call a few moments after space opens up.