I initially created a NAND backup a year or so ago and it generated nearly a 100GB folder. I then realized this was because I had two games already on the factory NAND from the cartridges that had been played. Is it ok for me to simply delete the games (by choosing Manage) and regenerate a new NAND backup? Then I would delete the first one to save on space. I haven't used the switch online since I created the original NAND backup either. I can't think of any reason why this wouldn't be ok but I wanted to be safe and sure.