While difficult, some players have successfully imported saves from the original Darksiders: Wrath of War by renaming the old save file to keen_savegame_0_0.sav and placing it in the Warmastered Edition's Steam folder.
The primary save file is typically named keen_savegame_0_0.sav . darksiders warmastered edition save file location
If you need to adjust game settings or delete a corrupted configuration, those files are located separately: %APPDATA%\kaiko\darksiders1\ the path varies between the Steam
C:\Program Files (x86)\Steam\userdata\[Your Steam ID]\462780\remote\autocloud\save darksiders warmastered edition save file location
The save file location for depends on which platform you are using. On PC, the path varies between the Steam, Epic Games, and GOG versions. Windows PC Save Locations