Unfortunately plex doesn’t embed the metadata into the TS file (afaik only Silicon dust DVR does that) so MCEBuddy uses the filename to extract the metadata when there is no embedded metadata available but I think plex can be configured to export the metadata into a .xml or some other format. Maybe @SJL has some insight on this
MCEBuddy can recognize most metadata formats, see more details about does metadata matching here:
If your only issue is the extraenous “(copy x)” in the title when MCEBuddy parses the filename to extract the metadata, you could use regex (if you don’t know regex just use the BOT AI helper, give it and example and tell it what you want to do and it should be able to create the regex for you to use) and metadata correction to strip that out of the title and then either use just that or have MCEBuddy use that corrected title to match the information from the internet. See this topic for more examples: