Originally Posted by
blue47
I am not going to search, but I think I recall reading on FF that revenue management can pull R availability just before the EUA is run, and reinstate it after the EUA. This allows passengers buying full Y fares (and B or M) to upgrade in the days before the flight. Otherwise, this option would disappear if there were enough high level elites on discount fares.
I am under the impression that the Y/B/M upgrades clear into a different bucket (FE/ZE?). Thus, there is no need for IM to pull and reinstate R/RN availability before the sweep.