(Steam) metadata/mediafiles updates request

[Pixel]

I added games with my own custom descriptions manually that I also have on Steam. Now I cannot see any option to update it with videos and game paths without losing my custom descriptions and custom fields like genres.

I have lots of games edited manually.

1. There is no option to update steam games.

2. There is no option to lock/protect my custom fields so that it does not get overwritten.

3. The second point does not concern only Steam games, but all games in Lanuchbox that I would like to edit manually without losing any data I do not want while updating metadata/media files from the online database.