Confirmed it. Last night I replaced my library paths from mapped drive letter to UNC paths. Plex's partial scanning capability is functioning properly. Much thanks. This is much better. With the mapped drive letter, Plex doesn't receive a flag that the contents of a folder changed, so no partial scans, which means I had to run frequent WHOLE LIBRARY scans to ensure content was added to Plex in a timely manner, which is just not a good method.
So cheers! Thanks for saving me days of copy time, as well as an OS format and other such nonsense!
