I didn’t know this was a new feature. I’ve been doing this for ages and while there is no way to edit/vari audio the tracks at the same time, it can help immensely to set up key commands for “Activate Next Part” and “Activate Previous Part.” Saves so much time. Also, I like to have the tracks set with different colors and the color selector drop down set to “auto” in the editor window. This helps keep the tracks sorted by color in the editor.