Playrate envelope:
https://goo.gl/nd5wgn
Move or copy media item:
https://goo.gl/Js5twA
Glue deletes underlying envelope point:
https://goo.gl/jUXEbw
Does't connect to underlying envelope 1:
https://goo.gl/mn1agh
Does't connect to underlying envelope 2:
https://goo.gl/vzZruQ