Troubleshooting and FAQ - Omni-guides/Wabbajack-Modlist-Linux GitHub Wiki
Here, I will try to document issues that regularly come up from users getting support, in case they help others in future.
Occasionally I see this, but haven't pinned down why as yet. It seems that on first successful launch, the game sometimes continues to use the save game location inside the prefix directory (compatdata) rather than the modlist savegame directory (usually in the profiles directory). It seems this is a one-off, and the game will always use the Modlist Save Game directory from now on.
So to fix, you can just copy the save games from the compatdata directory, for example:
/home/<USER>/.local/share/Steam/steamapps/compatdata/<APPID>/pfx/drive_c/users/steamuser/My\ Documents/My\ Games/Skyrim\ Special\ Edition/Saves/
Where should be replaced with your Linux user ('deck' if you are on Steam Deck) and should be replaced with the appid number for your modlist entry in steam (can be listed with protontricks -l in a terminal/konsole)
Copy the save game files to the modlist save game directory, e.g.
/home/deck/Games/Skyrim/Tuxborn/profiles/Tuxborn\ -\ Deck\ CS/saves)
Again you will have to adjust the path to match your environment - user, path, and modlist.