Originally Posted by SEMM

Yes amongst other things. The new system limits entirely the GA's in swapping out seats, removing and off-loading paxs in an oversell situation, assigns the upgrades and priorities it and no way for them (not concierges) to override the system. Amongst other things that this new super dupper system will apparently to do as well is VBD's and IRROPS.
All I can say is thank god SE's have the concierge team to fall back on. I wouldn't want to ask a GA the time of day at a gate when this goes live. Apparently, this new system will be rolled out to International Stations at a later date yet to be confirmed. I am assuming they will see how it goes and then phase it in system wide.