Thank you for the suggestion, Karina! But unfortunately, I ran into the exact same problem when I tried it out: dial the lights up to 1, they're on; dial them back to 0, off; dial back up to 1, still off.

The key system is looking like the only viable option based on a small test I did. I wish I had a cheat sheet for that so I wouldn't have to redo it manually (it's over 80 lights).