This is very important because this private forum is for my moderators and I to discuss the whole community. I set Category X and Forum X inside it, to PRIVATE. There is a usergroup xxx to match. Usergroup xxx has general permissions to view / post in forums etc which they have no problem doing elsewhere. On the Node Tree I selected the blue PERMISSIONS button for this forum. As well as setting it to Private I selected usergroup xxx and selected GREEN permissions to view, post, edit their posts as normal. This all worked OK some time ago. The forum X has not been used for a while. Recently I moved both the Category X and the Forum X away from root under another Category. Members of usergroup xxx told me they can no longer access Forum X. I logged in as one of them and I can see Category X but not Forum X inside it. I moved both the Category X and the Forum X back to root on the node tree. They still cannot access the forum! HELP!