hii you asked what happens on a post of mine when you data transfer a modded 3ds right? when you do that, you need the reciever console to also be hacked, after that do a data transfer as usual and put the sd card of the sender console in the reciever console

after that you'll just need to download faketik on your 3ds (you can get it from good ol github) and open it with the homebrew launcher, faketik will give you back all your custom softwares! if you plan to go thru with it, go check how to do a data transfer on the 3ds hacks guide

if you need more in depth help you can also ask on the homebrew discord server! (https://discord.gg/nintendohomebrew)

W i i U