This was brought up on Discord some time ago, and the idea was for mGBA to create separately named save files for when a ROM is running with a soft patch applied, as opposed to saving everything to the same .sav file, which will induce problems if the associated ROM is subsequently run without the patch.
Example:
Unpatched ROM=romname.sav
ROM with patch=romname(patchname).sav
This was brought up on Discord some time ago, and the idea was for mGBA to create separately named save files for when a ROM is running with a soft patch applied, as opposed to saving everything to the same .sav file, which will induce problems if the associated ROM is subsequently run without the patch.
Example: Unpatched ROM=romname.sav ROM with patch=romname(patchname).sav