That's some great advice Bob. At one time I had gone over to RB and did a lot of stuff there. The experts on this forum can always plot my latest interests by the posts that I make on here asking for help - lol.
So I will get looking at RB again with what you are saying.

The main issue I really have is this ability to change a track to midi from a style that has a super midi or RealTrack. This was the issue that was getting me even more confused by some of the answers I was getting to my posts.

I really do understand that a Super midi or RealTrack does not 'know' how to generate midi. But it is not the RealTrack or SuperMidi that would be responsible for doing that anyway, it is the style that uses the chords in the chordsheet to convert to midi. So, if the track can be replaced with an appropriate midi track that IS a midi style then that WILL work and the menu selection supports this by allowing the selection of a custom midi style.

What will NOT work is to simply change a RealTrack or Super Midi by selecting a midi patch. The latter is clearly won't work for the reason mention earlier; that there is no midi information. But why, in this case, does BiaB actually allow me to follow these steps only to see no change?

Thanks for your help