Zbrush Decimation Master problems

breakneck

decimation master is hacking the shit out of my mesh (see below before/after). If i decimate any further, it turns my mesh to complete garbage.
It has never done this to me before. The base mesh was 3 air-tight pieces of geo, all quads. The only thing i can think is that it is multiple pieces - which i'm gonna test right now.
-anyone have any similar problems?
edit: made into one solid obj - still the problem.
---> using 3.1, maybe an issue?

dan001

I was looking for a solution to this issue too

dan001

Alright, I think I figure out mine. It creates those artifacts when I project the details from another subtool. So I just worked around not projecting detail.