For the record, you don't break any rules by submitting a protagonist background story to contest round 1 because it turns out to actually be an antagonist story. That's the whole point of the prep. Everything can change from the beginning of the month to the end of the month. By the end of the month, you might even have a completely different story

You don't have to rescind any entries because of changes to your plot, characters, or anything else about your story.