I'm new to the forum as well as new to GPO and MIDI. I played pedal steel guitar for 27 years and now play bluegrass mandolin.
Anyway, as I stated, I just GPO a few days ago. In addition, I also have an M-Audio Keystation 61es midi controller.
Last night I was playing around with GPO as a DXi in SONAR PE4. I didn't bother to hook up the midi controller so I was inputing notes in the Staff View of SONAR.
Here's what I kept encountering. Each time after playback, I would add additional notes. Then, each time I punched playback to listen, the mod wheel on the GPO keyboard would reset to the minimum value.