1. Navigate to the 'sel_game' folder.
2. This folder should contain a folder for each version of the game you have downloaded. Open the folder for the version you wish to transfer the save data from.
3. Inside, there should be a folder called 'www'. Inside it will be a folder called 'save'.
4. Copy the contents of this folder to the clipboard.
5. Return to the 'sel_game' folder and open the folder for the version you wish to transfer the save data to.
6. Navigate to the 'www' folder and then the 'save' folder and paste the save data there. You can overwrite any existing files. If there is no 'save' folder present, just create one.