Not Identical results when loaded from. SAT and. SLDPRT file of a same solid part

I want to clarify about an Issue where when I am extracting the Brep details from an .SLDPRT file of a part and when extracting the same part Brep details but from .SAT file is different . Is there any way I can keep the orientation, Entities all identical. Is there any Initialization I need to do?