SOLIDWORKS 3D Interconnect supports STEP, IGES, and ACIS file
formats.
SOLIDWORKS 3D Interconnect can read Reference Planes and
User Defined Attributes or Custom
Properties from these neutral formats.
When you import custom properties from files, the translator reads user-defined
attributes, if present, and writes them into SOLIDWORKS custom properties.
You can read STEP, IGES, and ACIS assembly files as a multibody files. From the
System Options dialog box, you can choose to map and import the
assembly structure as a part with multiple imported bodies or as a multibody part.