Film Re-Recording Mixers?

Still got 45 minutes of trial so I tried the N10 mixer snapshot function in conjunction with Automation Loop and Preview and already written automation.
It seems it works only for insert plugins, regardless of Snapshot Settings.
It even warns it will delete Insert Automation, but when preview is enabled, it just punches the automation in snapshot so that’s good. When preview is not enabled it does nothing, insert automation rests in place, so why that warning?
Volume and send automation are not punched, why?
This would be a very useful function if it would work consistent with Preview and Punch workflow.