To avoid this, I edited the forum rules by adding this paragraph (ChAiNz.2da's idea ):
based off of RedHawke's post ~ CZ
Finally, in order to avoid unwanted situations where a moderator would move your [FIN] thread while you are still putting it together, make a post at the end of your thread with the words The End once you are done. We won't move until we see that post. Once we move the fanfic, we will delete the said post.
Edit: if you have ideas to make it even better, please do not hesitate to post them.