import kaynağı nedir?
çünkü: "You can edit only features that were created from an ACIS, Autodesk Inventor, IGES, Parasolid, Pro/ENGINEER, Solid Edge, STEP, VDAFS, or VRML file." demiş manualde...
EDIT= faydalı olabilir, bi göz at istersen:
help.solidworks.com