Re: Moving a post
AFAIK, no plugin has been created and the only way I know of is with direct access to the database. It’s not a fun thing.
You could always copy and paste the post info into a new post on the correct thread, then delete the original, but that only works if you want to make it the last post in the new thread.
You would also still need to edit the member name and id in the database or the new post your created. It’s not a good solution and I hope there is a plugin soon for moving posts and splitting topics.