I can not open or edit a part/assembly efter exporting from STEP/IGES to part/assembly. All parts shown with green arrows and can not be neither open no editing. Can somebody help me?

I can not open or edit a part/assembly efter exporting from STEP/IGES to part / assembly. All parts shown with green arrows and can not be neither open no editing. Can somebody help me?

SolidworksImport export