https://forums.autodesk.com/t5/fusion-design-validate-document/show-all-hidden-parts-in-an-assembly/m-p/5481102#M305910 <P>What format you import really does not matter. I've imported many step files into Fusion 360 and have had no problems hiding and unhiding them.</P><P>Did you watch my screencast ? It should answer your questions.</P> Sat, 24 Jan 2015 14:40:24 GMT TrippyLighting 2015-01-24T14:40:24Z