I have dug in the old SD files for quite a long time cuz I know that MHXX saves the data in "exdata" attempting to extract the save file manually in my PC, but all I can find is four different files named 0000001, 00000002, 00000003, 000000004 in the game ID´s folder inside "exdata". Those crash everytime I replace them with my newer 3ds same name files. Everything tells me that´s the save yes, but due to not being able to run the sd in any 3ds in order to extract the "system" and "system_backup" from the game using JKSV or Savefiler I can´t do anything. Does anyone know?