Okay, seems my entire vault has reverted to a few months ago, as you said. The 'extra' character Lon Blackhand is gone, as are the ones that were previously deleted.
The two in characters previously in question, Breeanna and Aerie, are more or less as they were. Any recent gains are gone, but nothing terribly noteworthy that I would be upset about. Maybe a partial level, and a few decent things and odds and ends, but nothing I cannot replace.
However my Monk Hotaru, now, has been reverted too, and lost months of progress (I've been playing her a fair bit). She is now level 7, where she had just reached 9th 2 days ago.
Also lost some notable gear on her due to this heavy rollback:
Fists of Andral
Scarab of Protection +2
Hector's Knuckle Duster
and less notably (and more easily replaceable in game)
10,000 gold
A few magic bags
Potions 'n varnishes and other minor consumables.
Not any way just to revert her to as she was last reset or something, is there?