EDIT 4: Down below has data on N64 extraction, not quite 3DS relevant, but it was in the same process.
So this guide is here after a good chunk of research and trial and error, I have successfully converted a few WiiU GBA VC saves to run on the 3DS GBA VC Injects, it may not be something many of you will use, but I wanted to continue my saves and not start over, and I am sure there are many other who do as well, so I figured I would post a guide on how I did it. Please keep in mind...
[Tutorial] Bring your WiiU GBA Saves to 3DS GBA VC
So this guide is here after a good chunk of research and trial and error, I have successfully converted a few WiiU GBA VC saves to run on the 3DS GBA VC Injects, it may not be something many of you will use, but I wanted to continue my saves and not start over, and I am sure there are many other who do as well, so I figured I would post a guide on how I did it. Please keep in mind...
[Tutorial] Bring your WiiU GBA Saves to 3DS GBA VC