JT Import

We are importing JT files from Solid Edge and are having issues with extra lines showing up. When I import the JT file I can see all sorts of lines on the part. I looked at the jt file in a different program and when looking at hte wire frame version it seems to coincide with the lines that are showing up. If I export the same part to iges and step they look ok. I am expecting there is something happening with the importation of JT into isodraw.