Multiple Montages Rendering Regions

I have two montages open, both with region markers and generic markers. I select them both with control-click. I go to the Render tab and select Multiple Outputs - All Regions. Then Generic Marker appears below All Regions, no other option. I try to start the render and it says “You have specified that you want to Render Regions, but there are none in the Audio Source”. Is that correct?

Also if I try “All CD Tracks in Group” A, and both montages happen to have all CD Tracks assigned to A, I get the same message.

Fixed in upcoming 9.0.20