I am trying to export an inventor part to Revit as .rfa file. My part consist of a  pattern. I also have specified pipe and duct connectors in my part. I followed the guidelines given in BIM exchange in inventor help manual. I simplified the model by filling the void (i.e. the pattern). On conversion I found that the pipe and duct connectors failed during conversion. What could be reason for the same. I even tried exporting by using .asdk file to plant3d however the same problem persists.Kindly help.