Transfer mii's to other 3ds?

So, yeah i am kind of a bit new to this, let me explain my question.

I have 1 old 3ds LumaCFW
I have 1 NEW 3ds LumaCFW
I couldn't find anything about transferring mii's to my NEW 3ds, so that my NEW 3ds will say that the mii's are made by my NEW 3ds, while in face they are made by my OLD 3ds. Is there a way that i copy all mii's with a homebrew app or something so i can set them on my new 3ds?

Thanks in advance!