I am aware that 3DS files are offline and 3DZ online, the question is why? Can I take a .3DS game and rename it .3DZ and take it online? If I have 1:1 dumps is there any risk, and has anyone heard of 3DS's being banned?
Yes but not as easily as just swaping. You have to install fresh copy of Windows on it, and you may be able to save some stuff from old windows on it, you will have to reinstall most