If you are moving from one repack version to another (e.g., from an old version to a "Complete Edition"), you must locate the Steam_api.ini file in the game folder. Look for the AccountId or UserName line; if these don't match your old version, the game won't "see" your old saves.
C:\Users\YourName\AppData\Roaming\Goldberg SteamEmu Saves\20900\remote CODEX/PLAZA: C:\Users\Public\Documents\Steam\CODEX\20900 batman arkham origins save file repack
If the game crashes during a save, that file is likely gone. This is why keeping a "Save File Repack" archive is essential for players who don't want to restart from the beginning. 4. Why Use a "Save File Repack"? If you are moving from one repack version to another (e