NX Opening a Parasolid file creates an assembly structure instead of a single part.

Exporting a Parasolid file from a single part containing multiple bodies, then 

re-importing the Parasolid file using 'File-->Open', results in an assembly 

structure being created.

How can this Parasolid file be re-imported into NX without creating an assembly 

structure?

 Use 'File-->Import-->Parasolid' instead. 

1. Use 'File-->New' to create a new part file with the desired units. 

2. Select 'File-->Import-->Parasolid'. 

3. On the Import Parasolid File dialog, set the "Files of Type" to the 

 Parasolid format needed. 

4. Browse and select the Parasolid file to import. 

5. OK the Import Parasolid File dialog. 

This will import the multiple bodies into a single part file without creating 

an assembly structure.

 Additionally, later versions of NX will have an option on the Parasolid Import dialog to Flatten Assembly

Notes