Soph Shepherd

One group only is missing from my list and the list of those who belong/belonged to it, anyone have any idea what is going on? Please? I have stuff deeded to it, I need it back. PS: I AM the owner. Sorry, I keep having to edit this - The group had about 5 members, all of whom are active and it's not in their lists either. It doesn't show on search but it exists because I can't remake it. I certainly didn't disband or delete it for any reason.