Yes the layers are directly imported from revit too (ie. window frames, glazing, walls, etc) the thing is that they all come in as groups or components and literally all I need is the outer 2D shell. The revit model export is still very big for what I am doing even with interior elements turned off. I don’t even really need wall thicknesses. This guy on this forum seems to be wanting to do exactly what I need but no one could really help him either Create an outer shell from complex model
I am starting to lose hope on it