I saved a couple very simple files as 3DXML with SolidWorks. Then I tried to import them with SolidWorks, and eDrawings. Here are the errors I receive for everything 3DXML based:

So what gives? Why can't eDrawings read 3DXML files generated by SolidWorks? Can eDrawings read CATIA 3DXML files correctly? I tried, no dice.

Here are the claims that it can:

https://forum.solidworks.com/community/design_collaboration/edrawings/blog/2012/04/23/edrawings-faq--why-are-the-colors-in-an-edrawings-file-not-the-same-as-they-are-in-solidworks

http://help.solidworks.com/2014/English/SolidWorks/sldworks/t_3D_XML_Files.htm