I've imported a step file into Solidworks and although the parsing completed without any issues, there are no components (parts) in the feature tree. The size of the .step file is almost 10Mb, but the converted file is only 66 kb. Although I've successfully completed this type of import many times before, I've never had this issue. The only items listed in the feature tree are the common items: An annotations folder (empty, of course), the icons for the front, top and right planes, the origin, and mates (also empty). There are no other items. Does anyone have any idea why this is happening?