Game Boy Advance games running in mGBA won't save or load but only when launched through Launchbox.

[doctorwindmill]

Hi! I'm trying to play GBA games using the standalone (non Retroarch) version of mGBA and whenever I launch a game to mGBA from within Launchbox, the battery save file doesn't get loaded and I can't make any saves either. The game says it saves, but no .sav is made, and everything is lost upon reset. However, when I use mGBA outside of launchbox and load a game in, everything works fine. Any ideas on a fix for this?