Our customer received a STEP file from SolidWorks which opens as one part in Solid Edge. When they open the same STEP file in NX, it shows that the STEP file is not one part but a complete assembly with a lot of different parts in it.
Solution This is a multi-body file in Solid Works.
If you open the Solid Edge STEP.INI and change the option:
Import Multiple Bodies As Single Part file=On
Import Multiple Bodies As Single Part file=Off
Then use an assembly template to import the STEP file you will get the assembly structure as expected.
Notes and References
Hardware/Software Configuration Platform: INTL64
OS Version: 764SP1