Alright, so this is what it happened to me yesterday. I used https://gbatemp.net/threads/release-super-smash-bros-3ds-save-editor.382239/ this editor, and https://gbatemp.net/threads/wip-sm4sh-save-editor.382699/ this one. So I got all customs, trophies, and made equipments to atk/def/spd +200 and -0. I made few custom characters, Every thing was fine. But, right after I created room to play w/ my friends, (With friends, online) I got message saying Your save file is irrelevant, You were disconnected from internet. And I was back to menu. I thought it was some kind of error and thought everything is gonna be ok. Then I played acnl, then back to smash. My data was erased. I tried to fix my save using this; https://gbatemp.net/threads/wip-sm4sh-save-editor.382699/ (there is a fix save option inside this editor) Tried to fix, nothing . Can anyone help me w/ this?