What happens when I don't perform a system transfer from my old 3DS?
I'm planning on selling my old 3DS with the SD card that has games in it and buy a new one. I already have a new SD card which I copied the games from the old.
So my questions are:
1. How do I sign out my e-shop account, miiverse account or my nintendo network ID in my old 3DS?
2. If I signed out my account in my old 3DS, will the games on the SD card going to be deleted?