Can I edit or and mix .inis / .bit, bin or .rbf core files between Aga and 060 DB file sets.

You cannot mix or edit and interchange files between the amiga 020 and 060 cores etc. eg: (mix .ini’s / .bit, bin or .rbf core files). For Amiga AGA you must use only its relevant files that are included in Its GitHub Repository. https://github.com/FPGAArcade/replay_release/tree/master/amiga/amiga_aga, and for the 060 and DB you must use its Repository https://github.com/FPGAArcade/replay_release/tree/master/amiga/amiga_68060