ROM Hack How to transfer game data between different cartridges?

[inhencecc]

I've had Ace3ds for about two weeks, but bought the 2015 R4 Dual Core flashcart, since Ace3ds kept showing errors. For ace3ds, my game data was saved as gamedata.bin. For the r4 card, it seems I have data1.bin, data2.bin, and data3.bin. Is there anything I can do, like overwriting some files, to get my old game data back?

Thanks.

 

[x65943]

Try and rename gamedata.bin to data1.bin, maybe each data1.bin corresponds to a different save file.