Do you happen to have Melodyne?
That may be a better solution.
Once you start regenerating it will be tough to duplicate what you have created,
AND get the RealChart chunks copied in as you are cutting/pasting audio.

Also, I'm not sure RealCharts work with Multitracks, I haven't tried that.

May be faster to transcribe it (play it on a keyboard) or try Melodyne since it is pretty good at making notation especially from a single track.
Just trying to save you some time.
If you've worked on it for a few months you've got a lot of effort into the existing.
Maybe someone here who has melodyne could do a quick transcription for you (?).


I do not work here, but the benefits are still awesome
Make your sound your own!