Sorry for flooding this thread, but using the 'Snapshot current device values to automation´ keyboard shortcut, I note all dsp devices on that particular track are taken into account - written to automation, not just a selected dsp device.
I think a better name, as it works now, would be; Snapshot track dsp-device(s) values to automation.
Additionally another snapshot shortcut (if not already present?) would be that only the selected dsp device is taken into account.
Sometimes I have linked signal followers or other modulation meta devices to parameters, if the snapshot writes everything to the automation editor, these linked parameters can act wonky. So there isn’t always a need to write all automation for every device.
(btw Afta made a similar script ages ago; New Tool (2.8): Snapshot )