My method of composition is to improvise (with two hands on an 88 key controller) and then edit the improvisation to get what I want. This works great and gives me a very human feel - but falls flat on its face with GPO and JABB.

That is because my performance records velocity and GPO / JABB wants cc1 to control volume.

Has any other Sonar use devised a way to map the velocity data to cc1?

I am using Sonar 8.5 and the latest GPO / JABB (aria versions)