Readers help Authors produce a better product discussion

Every discussion thread in this group has vanished, and all we have in their place is a notice that no discussions have been started! Does anybody know what's going on with this?

Well, all the discussion threads are now back, as if they'd never been gone! I know the same thing has happened in at least one other Goodreads group recently; and there too, the threads reappeared right after someone had started a new thread to report the disappearance of the other ones. Both of these incidents happened in groups that have been inactive for a very long tome, but I don't know if the one fact is related to the other.