You can Cut these events by using Edit-Cut and paying close attention to what you are cutting.

There is a check box along the way for cutting only these (Node) events.
They are CC7 (rarely but possibly CC11) that need to be cut.
In recent versions you can also Right-Click in the Nodes (automation) area of the Track display and choose Clean Up Nodes, or Remove Nodes..

If you feel more comfortable knowing exactly which CC's you are cutting you can enable the Data Filter which allows being very selective on what you are going to edit, even allowing a secondary filter..

If you want to preserve the original automated mix, use Save As ..


I do not work here, but the benefits are still awesome
Make your sound your own!