[Bldg-sim] Sketchup 8 to energy plus file

[chik king ho]

Hi all,
I want to use sketchup 8 to make a simple model (a square shape and some windows) which can be used in energy plus. However, I found that the when I saved the model through Legacy openStudio plugin and open with idf editor, I could not even find a BuildingSurface:Detail. And then, I tried to find some model from internet, I still could not find BuildingSurface:Detail. So, what's wrong with that?
Hope someone can help me.
Henry 		 	   		  
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