Any lingering issues, can probably be corrected with “precise” naming and structuring, Refresh Metadata, and perhaps The Plex Dance for stubborn mules:
The purpose of this is to remove all cached metadata and xml data for an item that Plex usually keeps. This helps when you want to “start from scratch” for particular item
move all files for the media item out of the directory your Library is looking at, so Plex will not “see” it anymore
scan the library library (to detect changes)
empty trash
clean bundles (in menu next to server name, when accessed under ‘More’)
double check naming schema and move files back
scan the library
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