To Append an NX File to an Existing Part
1. Open a Creo part.
2. Click
Model >
Get Data >
Import. The
Open dialog box opens.
3. Select NX File (*.prt) in the Type box. You can also set the file type to All Files (*), Creo Files (.prt, .asm, .drw, .frm, .mfg, .lay, .sec, .dgm, .rep, .mrk, .int, .g, .cem), or Part (*.prt).
4. Select an NX .prt file from the current directory or browse to select the NX file from another location.
5. Click Import. The File dialog box and the Import tab open.
6. Select an NX-specific import profile from the Profile list to replace the import profile in use or click Details and open the NX — Import Profile editor and customize the import settings in the import profile editor.
7. Select other options on the File dialog box before you proceed to use options on the Import tab.
8. Click OK in the File dialog box.
9. Accept the default coordinate system or select another coordinate system on the Import tab to locate the appended data.
10. If the native part file already contains solid geometry, click one of the following buttons on the Import tab:
◦ 
or
to add or subtract the imported geometry from the existing solid.
◦ 
to insert the imported geometry as a collection of quilts that does not affect the existing solid.
11. Click
on the
Import tab. The NX
*.prt file is inserted as a protrusion, cut, or quilt in the native part. The import log file is automatically generated in the working directory.