Hi! I'm working on a Revit merged model, I want to render it with ART Render and everything is fine (materials, lighting, shadows) but the windows in the model aren´t work because in the render appears without a material even is I can perfectly see them on the viewport. The windows are a Revit family and I put them a Editable Mesh to apply different materials in the elements (frame, glass panel and brise soleil) and every material has a UVW Map. So, I don't know what is the problem. If someone where knows, please let me know it. Thank you