UBB.threads PHP Forum Software Community Forums UBB.threads 6 Version 6 Support LOST FORUM, disappeared, but in Jump Menu can see, why?

We had one of our forums completely disappear within a category. This forum was titled 'moderators' and one day just vanished. Nobody knows why as our 2 admins did not delete it.

Now we can see the old 'moderator' forum, and the new one, both in the JUMP menu. How can we get rid of the old one that vanished from the Jump menu? Or, how can we bring back the old one?

Confused.

Thank you very much!

Mark
http://www.clubadventist.com