The possibility exists where people may post a reply to the wrong discussion, Replies may be posted to this posting/reply.
This could happen for various reasons such as having one or more discussions open and getting confused as to where one is actually entering the reply.
The OP or Moderator should be allowed to move the posting.
This may in some cases require opening a new discussion. A Moderator should be permitted to open a new discussion on behalf of the OP. This should retain the OP's user id as the original creator of the posting.
As part of this move any replies to this posting should automatically be taken across as well.