Hey dude, thanks for the reply, the model is kept near the origin only and when i imported to sketchup i deselected preserve origin.. but still i get the bug .... pls find the atttached.

i have done a model with autocad and imported to sketchup i the following problem, when i rotate the model i cant see the faces it shows as if get cut....Mainly when i go inside a group...

Need help.....