Today I modelled a structural building in Graitec steel, and brought the building into Plant 3d space. Then generated Orthographic, it comes very nice and can be rated very good. ASD modelled elements in plant space have more errors, bugs and improper ortho generation.
Gone through the document in net about how to convert Revit models into ACIS format. If Autodesk ppl informed about this, I would had used my Revit model in plant 3d space. The workaround is there in place, but nobody know except few ppl, those are not in Adsk.