How to use:

WiiU to Switch (clean)
1. Open a "Super Mario 3D World" save file
2. Select the path you want the converted file to be saved to
   If you don't browse for a path the standard path will be taken
   "\Converter_Startup_Path\converted\GameData.bin"
3. Click "Convert clean"
4. Restore the converted save on your Switch/yuzu
5. Be happy and play
 
 
WiiU to Switch (merge) This way you can keep your progress in Bowsers Fury
1. Open a Super Mario 3D World save file
2. A "Merge" menuitem will appear
3. Click "Merge->Open NSW save" and browse for a "Super Mario 3D World + Bowsers Fury" save file
4. Select the path you want the converted file to be saved to
   If you don't browse for a path the standard path will be taken
   "\Converter_Startup_Path\converted\GameData.bin"
5. Click "Convert merge"
6. Restore the merged/converted save on your Switch/yuzu
7. Be happy and play
 

Switch to WiiU
1. Open a Super Mario 3D World + Bowsers Fury save file
2. Select the path you want the converted file to be saved to
   If you don't browse for a path the standard path will be taken
   "\Converter_Startup_Path\converted\GameData.bin"
3. Click "Convert"
4. Restore the converted save on your WiiU/Cemu
5. Be happy and play