Still possible in Live 9;
I go in arrangement view.
I select an automation parameter from the Device Chooser from a track.
Now i can see the red automation line.
I drag a region in that track.(yellow area)
With SHIFT key pressed, i navigate my mouse pointer close to the automation line in the selected yellow area.
The line becomes blue !
Now drag that blue line up ,for example.
Now there will be 4 envelope breakpoints added to the automation line.
Note: in my experience, when you don't hold SHIFT, the very same happens only you have to navigate your mouse pointer closer to the selected automation line,to be able to drag it.
But the 4 breakpoints will still be generated.
Hope this helps.
Rob van Hees
Macbook Pro 15", 8 Gig Ram, Mavericks 10.9, Novation Impulse, Maschine MKII, Live 9.1 (latest beta 64bit), Logic Pro X 10.04, Protools 11.02, just too many plugins.