I have a RealTrack as part of my mix and wanted to mute it for the solo. tried simple nodes from original setting to 0 then back again but volume kept changing to different levels. in the event list i have a string of CC7 volume changes along side the node volume changes which also override the mixer fader and which i can't explain. they only vary slightly but enough to make the fader move when you watch.

where have them come from? deleting them is time consuming.