Garageband 10.4.6 track volume and pan suddenly locked on all Songs, Help!

FYI, I got Apple support on the phone. Problem was my track pad. It took an hour or so to isolate it. We did an SMC rest. Hold shift, control, option and power down for 10 seconds, release. Then power on. Worked like a chram!

The more I look, it appears master volume locked, noise gate, and probably other stuff. I have checked "song Lock" and automation, both not on. Any ideas??