Homebrew Tomodachi Life Extra Data Question

[Larsenv]

So I've been looking at my extra data dump that I've got from a New 3DS I've bricked (thank goodness I have this and replacing it with a New 3DS XL) to see what I could retrieve from this and came across a file called "savedata.txt" (who knows why it has .txt at the end lol) with all of my Tomodachi Life islander's catchphrases and stuff that I wouldn't want to lose.

Since I have that, is it possible that I can put this back in the New 3DS XL when I have it?

Thanks.

P.S. I've gotten good with Python coding, hex editing, decryption, etc. so I would love to make a save file editor for this game. If I get the save file back I would probably do so.