You can transfer the progress of the game by saving, turning off PyBoy () and then copy the .ram to .sav and open mGBA. Then you can open up the game where PyBoy was. But your RNG etc. will vary. And even if you force set all RNG, just slightly different timings will quickly desync them (if it matters)
guys, please a help needed: I'm trying to load "sav" in any emulator: mGBA, visualboyadvance, bgb, without any succes. I tried exporting the "ram" file and renaming it to "sav". What am I doing wrong?