Currently, when a forum discussion is moved to a different forum, posters don't know where their discussion has been moved to, or whether it has been deleted.
A workaround for this problem is to reply to the discussion stating which forum it's about to be moved to, then check the mail now box before posting. However, this results in all forum subscribers receiving email notification, when most likely it's only relevant to the particular discussion posters.
Thus, it would be great to provide automatic email notification to forum posters stating which forum their discussion is being moved to.