Shortcut to trim Volume Automation in Mixer (from beginning to project end)


a track has already volume automation, which means that in order to change the volume for the whole song, I need to use the marquee tool, select the whole volume range and trim down or up the volume. I can also use the gain plugin - But all this requires multiple steps.
It would be cool to just be able to use strg + drag down the volume of the mixer fader and Cubase should automatically trim the whole volume curve. Would be an enormous time saver - or do you guys have another workaround for this ?

Cheers, lokotus