The renovation filters aren't really designed to manipulate the properties (i.e. surfaces) of individual elements.
They will simply hide, show entire elements or override properties for all elements in the model based on their renovation status - existing, new or to be demolished.
If you want to modify just one surface of one wall then it is best to tag it as 'to be demolished', hide in in the filter and then show a 'new' wall with the surfaces that you want with no overrides.
If you use overrides for the surface then all surfaces (front, back and sides) will be changed to the surface you set in the override filter.
You can set an element to use only a specific filter but still the override will affect all surfaces - hence you would still have to hide the 'to be demolished' wall and show a 'new' wall with the new surface you want.
Barry.
One of the forum moderators.
Versions 6.5 to 27
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