Your saves for the base game and episodes are now managed under one unified system.
If you haven't already, add the Complete Edition to your library. grand theft auto iv the complete edition v12032 install
The installation process varies depending on the platform or source used: Your saves for the base game and episodes
If you are using a digital version (like Steam or Rockstar Games Launcher), the process is automated. For other versions: grand theft auto iv the complete edition v12032 install