According to
https://www.reddit.com/r/tomodachilife/comments/2vqtyg/can_i_transfer_the_save_data_to_a_different_3ds/cokjxx4 there is a safe, no-hacking-device-neccesary method to duplicate or transfer Tomodachi Life-savedata from one game/console to another.
If this works, I wonder if those...
My 1500ish games is all hand picked and scraped it's taken me months but zero trash well except MAME.... Tried deleting clones and broke the originals uugghh