Hmmm…I might have figured it out. I am using a Native Instruments S61 Mk2 controller. The ribbon strip can be used as a volume control and I was doing so. Not sure the thing is sending proper cv’s to Cubase NI is supposed to update the software for transport control of Cubase by year’s end, in beta testing now). Anyway, I deleted the track and created a new one w/o using the ribbon controller and all is well.