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			|  | I have a model that I built and was planning to use the shadow on/off feature of certain faces to simulate what would happen when the pit is at stage level vs seated with an audience. I used the edit tables function to negate the shading on those faces to simulate the seated position but I keep getting acoustic shadows where there should be none. Going back to edit the model, the shadow box is checked for faces where I have turned them off multiple times.  I even tried just doing it with the face properties instead of using the edit table function and they still keep turning back on. What am I not understanding about turning shadows on or off for a face? 
 edit:  I'll confirm the Shadow Cast box is unchecked until I save the model and somehow is checked again after saving.
 
 edit2:  locking the face makes it stick. Can someone explain to me what's going on so that I can better understand the program's behavior?
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