Your system information

• Steam client version: 1668654410
• SteamOS version: 3.3.2
• Opted into Steam client beta?: No
• Opted into SteamOS beta?: No
• Have you checked for updates in Settings > System?: Yes

Please describe your issue in as much detail as possible:

When a game is installed on the internal SSD and subsequently moved to the MicroSD card, most games will be moved completely, i.e. the game files in ~/.steam/steam/steamapps/common/{Game}/* and ~/.steam/steam/steamapps/common/appmanifest_{GAMEID}.acf as well as the saves in ~/.steam/steam/steamapps/compatdata/{GAMEID}/*.
I noticed that this is not true for some games, e.g. Fallout New Vegas, Disco Elysium or The Night of the Rabbit.
When these games are moved from SSD to MicroSD either by using the "Move Game" functionality in game mode's storage menu or moving the files manually, the saves "disappear", i.e. the game can't see them anymore.
It seems these games store their saves on the SSD, no matter where the game files are stored.

Steps for reproducing this issue:

1. Install one of the affected games on the SSD.
2. Start the game and save the game. You may want to restart the game and make sure the save is there and loadable.
3. Move the game to MicroSD.
4. Start the game. The save should not be there.
5. Manually move only the compatdata/{GAMEID} folder from the MicroSD to the SSD, leaving the game files on the MicroSD.
6. Start the game. The save should be there.