Meta Data, including custom collections, genres as well as Movies & TV episodes disappearing

[Scarthin 0]

Synology DS3617xs
DSM 7.2.1-69075 Update 13
Xeon 2.2ghz
16gb ECC ram
1 Btrfs Raid 6 with 10 6Tb Ironwolf Pro HDD For Emby and data storage
1 Btrfs Raid 1 with 2 6Tb HGST HDD which backup configurations and settings n such.

It started with Meta data disappearing randomly a couple years ago. There were occasional movies disappearing, it wasn't too much of a hassle to just re-rip them. I tried to find the problems but never tracked down the problem and soon I was too busy with other things to find the problem.

Things have changed there are young children who can access the server now so I enabled parental controls which works good once I figured out how to set it up.
But with the changing meta data Parental Controls are worthless and movies that I don't want the young ones to watch show up. I've had to remove them because of that which kinda defeats the purpose of the server.

So much meta data has gone missing that I'm gonna have to pretty much redo the whole thing. Before I do that, I want to find the problems so this won't happen again. 1550+ movies is going to take me a long time, time I'm not really wanting to waste. 

I'm not sure where to start in trying to track down the problem, or what information would be needed to figure it out.

[Luke 43551]

HI there, can you please provide a specific example?

How to Report a Problem

Thanks !