Hi if I prune users by postcount will that affect will that affect custom and 3,4,6 groups?
It affects to all the available groups
excluding admin, moderators, super moderators, banned.
However; if you wanna exclude any particular group being pruned you can use this guide:
http://demonate.com/thread-1230.html
Thanks buddy I was kind of worried but you know had to ask thanks again your are awesome!