I have 2x 2DS and a N3DS XL. Each will have its own main sd card, but in the case of taking turns with using the N3DS to test 3d and hardware differences. What issues should I expect? Thus far I've installed some legit CIA's as I think I may wait a little bit to play the downgrade game. Or at least hardmod one of the 2DS's first. Are CIAs installed also associated to the system? Will it just disable it until the sd card is back in its home device?