to export and import your save data. Be aware that using modded saves online, especially in Seasonal play, carries a high risk of being banned from Nintendo servers. step-by-step guide on how to safely export your save using JKSV?
: Nintendo does not allow users to extract save files from the SD card or system memory through standard menus. You must have a modded console (using Atmosphere or similar) to export your save before it can be loaded into an editor. Seasonal vs. Non-Seasonal : diablo 3 nintendo switch save editor free
A: Yes. You cannot edit a save file on a stock, unmodified Switch. You need custom firmware (CFW) to extract and inject the save data to an SD card. to export and import your save data