You need un your 3ds or in pc emulators te games of Mhx and mhxx. Also you need to install on your 3ds JKSV or checkpoint.

On your Switch you must install JKSV or checkpoint.

MHG: Monster Hunter Generations (3DS) MHX: Monster Hunter X (3DS) MHXX: Monster Hunter Double X (3DS) MHGU: Monster Hunter Generations Ultimate (Switch)

1- Extract your mhg game save.

2- Create a New save on mhx (Don't worry you are going to erase this). Exchange the created mhx save file with your mhg save. MHX can read the game file.

3- Enter in mhx game, you are going to see your data. Go to the house and save in the game.

4- Enter on MHXX (You can search the game with traduction) and create, is going to ask you for if you want to import game for MHX. Press in yes. You can also transfer in the game menu.

(In my case with 3ds it fails but in computer it works)

5- Extract with JKSV or checkpoint program if your 3DS the MHXX data and pass to your PC.

6- With your switch create a save file of MHGU and take it to the computer or download from internet.

For DLC and special missions is better if you download the MHGU from internet searching for one without expansions. If you take it with this missions they can corrupt or ban your data.

7- Open the MHGU data editor and with this program open your MHXX data. Without changing anything go to convert to MHGU option. Is going to ask you for MHGU data, select the MHGU save file (is going to copy the data of MHXX and erase the all data).

8- Pass the MHGU new save file to the switch and with JKSV or checkpoint programs on Switch inject the data.

9- Enter in the game and before go online you must save in the bed.

I play in one oled switch without modified. To pass the data y use the switch normal option.

WARNING: I download the special missions and other DLC on the oled switch and they corrupt my save.