Movies/series no longer matching

I had temporarily pulled it and put it into another computer to speedtest it with a direct sata connection …and it relabeled the drive letter, which I noticed when a I plugged it back in and changed it back to “S” before restarting server, It’s an older 840 evo …I did enable “Rapid” mode when speed testing on another machine but should that have made a difference? …and it had the issue before I did any of that …I just thought it was a “one off” till I tried loading more movies.