Now I notice that filter settings for 'Elements To Be Demolished' is set to 'Hide' then the fill for the wall where the window is will disappear from the plan (has no effect in 3D or elevation).
So it seems that Archicad knows that a new window has to demolish the wall it is going in so therefor you need to 'Hide' items to be demolished if you want the wall fill to disappear in plan for that particular filter.
I am not sure why this would not affect elevations and 3D as well.
But as I say I don't use the reno filters that much.
One of the forum moderators.
Versions 6.5 to 27
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