Well some of my undead are Longdead Horsemen, and it appears that some of them heal each turn, while others don't. It appears there is some sort of random chance - maybe I'm one of the first to notice this?
As for healing afflictions on undead... like living units, I think it gives them character to keep their wounds, though it'd be nice to have spells, abilities, and/or items that could re-build the undead as well, like an anti-chalice or undead repair kit or a necromancer with specialist repair ability.
Thinking of other fantasy games with undead, it seems to me some allow repair and some don't. GURPS Magic for instance lets you recharge their health but not replace lost body parts, and includes some fun rules for the combat abilities of partial-bodied undead. I mean, isn't much of the fun of fighting undead that you get to do battle against the limbless, and still remain politically correct?
PvK