The update note warned about mining being interrupted, strange that they didn't clear the hero status though. I logged in early and reset the heroes, losing only 1-2 hours. All statistics were reset (might recalculate next cycle), but our guild's gp was preserved (if yours wasn't, definitely ask for a fix). Too bad about the Realm thing, our server just managed to finish Slim, so we just missed out on Serafine. Unfortunately our new friends/opponents are a week+ ahead of us in terms of progress, so it looks like we'll be playing catch-up until the end.