I made the unfortunate mistake of beginning the Cataclysm campaign, which I now cannot seem to leave.
Things I’ve tried:
-Using my hearthstone. Even though it is set to non-Cataclysm Org, it brings me back to Cata Org. Makes sense.
-Talking to Chromie in Cata Org. She does nothing for me.
-Going to the Warchief’s Command Board. I’m locked out of Grommash Hold, so I can’t speak to Saurfang. The Cenarion Expedition guy doesn’t show up where he should in Org. Various features of quests related to the Command Board are basically broken in Cata Org. Awesome.
-Taking the portal to Dalaran and other locations, then porting back to Org. This still brings me back to Cata Org.
-Internet searches turn up useless and outdated information that isn’t helpful at all, and Blizzard maintains no official Wiki to help one navigate the Byzantine cluster of overlapping expansions and temporal dimensions that currently exist in this game.
Reporting this as a bug, because I can’t imagine this is intentionally designed this way. The hearthstone should always bring one back to the EXACT expansion/time/location point it was set to.