Using 20.8. I have a couple props that span multiple controllers, one 5 controllers and one 3. Both cases the 1st and last controllers visualize as expected but the "in between" controllers show nothing. Not sure if this spanning situation is supported so not sure if this a bug or just not supported. Wouldn't set it up this way if I built the props now but the matrix was done before Falcon and other newer controllers existed. Files attached just in case. Was hoping "cleanup" was going to be relatively easy but between my "goofs", polylines with multiple ports, this spanning thing, colorlight required changes, usb dmx required changes and dmx via falcon required changes leaving un-managed stuff seems perhaps the better option at this time.