Move a single or a selection of postings to another or a new thread

Sometimes user post in the wrong thread or you would like to move one single or a selection of postings in a thread to another thread or just create a new thread with it/them.

Right now you can only ' move'  the complete thread to another category. Quite often it is needed to just move one or a few postings to another category, or into another already existing posting, or just create a new thread.

Thanks.