Workgroup Manager and Server Admin inconstancies

[razzmataz]

I am setting up OS X Server (Advanced configuration) on a Mac mini. At some time I added a group and then deleted it. I now wish to add this group again and the Workgroup Manager GUI claims that the Name and Group ID already exists although I seem to be able to re-use the Short Name. Also if I try to add group permissions to a shared folder using Server Admin this Group Name/Group ID appear in the list of groups. How can I tidy this up?

Another “variation” of this occurs when I create a shared folder. This also appears as a group when adding group permissions, but not in Workgroup Manager. Why should this be?