You can import files into NX by using File => import => step, iges, parasolid, part etc… But sometimes the import function seems empty. This is the result of
You can have some problems while importing the stp files into NX. Options changes imported data. Import From: Select stp file to import. Import to Part:
You can export part, assembly, bodies or selected objects by using step/stp export function. Data to Export: You can select which data will be export. (Curves,