This means that Plex will actually look for its metadata in
E:\Plex Media Server\Plex Media Server
Please look at the folder E:\Plex Media Server
It should look like this:
If it has an additional folder Plex Media Server inside, this means that Plex ignored all your old data and created a fresh folder structure inside of E:\Plex Media Server\Plex Media Server
This snag is already documented here: [HowTo] An extended guide on how to move the Plex data folder on Windows
