On v1 release, i forgot to re-add a static SteamID into configs.user.ini which causes the emu (or the game) to regenerate random SteamID upon game exit that causes the existing save files to not get loaded on the next game boot. Re-adding it back in v2 fixes it.

But if you've already progressed enough in the campaign and want to restore your old progress without starting over, then follow this steps:

- Navigate to "C:\Users\<username>\AppData\Local\Activision\Call of Duty\players"
- Take a note of the SteamID of the numbered folder (the oldest created) that contains your already existing save files
- Open configs.user.ini in both "sp26\steam_settings\" and "sp26\steam_settings\local_saves\settings\" and put the SteamID that you've noted earlier on "account_steamid"
- Done