[Husmas]

Hi Dave,

Thank you so much for your suggestion. In the meantime I think I might have stumbled on a different solution, that - at least for the time being - seems to work:

Swiping up with three fingers on my touchpad opened "mission control" (Is what I think it's called). I the dragged and dropped the edit window from my primary to my secondary screen, saved it, closed session, opened it up again and... Voila! The edit window sat right where I left it on my secondary screen!

I'm sure it'll be gone tomorrow, but for now this solved it for me.

Edit: Upon closing pro tools completely and re-opening I was back to square one. Fortunately, a combination of Dave's advice and the mission control trick seems to retain the window placement data, even after a reboot.