were these S2 E8 - S2 E10 new recordings
If they were new, i cannot see any reason for them to be labelled as 2016
Did you switch to a new library dedicated to DVR TV Shows recordings only - as suggested would be best to do in this post EPG metadata is now retained for DVR recordings ?
Were there any previous episodes in this library that were tvdb matched for this show?
If this is happening with a fresh library then I would like to see the Plex Media Server logs covering the recordings - when the recording finishes and gets post processed and added to the library. Might need to also see the Plex Media Server database and EPG database
https://support.plex.tv/articles/201643703-reporting-issues-with-plex-media-server/
https://support.plex.tv/articles/200250417-plex-media-server-log-files/
