Yes, this is what I think the most important think to implement in the MAC version of BIAB.
Many users say that they had developed hundreds of files, MGX for instance, they would like to use switching to MAC, without having to rebuild each one.

Moreover, Opening a MIDI File or a KAR file should work as in Windows, nothing more nothing less, with Lyrics, chords, and every track in the 16 tracks sequencer, ready to be modified.

Now that PGMusic is going to revaluate MIDIs, is time to think about it.