Use embedded design layer viewport setting for...

[Josh NZ]

I have a design layer viewport which shows a floor, with a class override so that the floor shows as a solid white outline instead of a concrete surface.

I also have a sheet layer viewport which views this viewport.

In the viewport class properties I have ticked both "Use embedded design layer viewport settings for:" - Class overrides and class visibilities. I have the classes turned off in the actual sheet layer viewport as it is the design layer viewport it is showing.

The floor shows as concrete, where I would have assumed it would show as a white outline. If I turn off the Class overrides and class visibilities the floor disappears so I'm guessing it's something to do with the Class overrides button that I have ticked.

Any assistance on this would be greatly appreciated.