If you see this appear in your log files, it means you need to perform the Plex Dance to clear the hash. As it says in this line, it does assign the file of Episode 13 to the metadata of episode 12.
If you see this appear in your log files, it means you need to perform the Plex Dance to clear the hash. As it says in this line, it does assign the file of Episode 13 to the metadata of episode 12.