About meaning of icons after importing Parasolid file

When you open the Parasolid file (*.x_t) using [File > Open] in NX, in Part Navigator the feature is shown with a Yellow Pyramid.

If you double-click on the Feature to edit it, the message as shown in the below image occurs.
"Feature level update from the source Parasolid file is not currently supported. No updating of Parasolid files is currently allowed".

What is the meaning of the Yellow Pyramid icon that is shown in Part Navigator and why the message occurs?

The yellow pyramid icon mainly represents interop features in NX.
After double-click to edit the feature, the message states that the feature level update is not supported.
There is no feature edit dialog for any of the interop features because these are created on the import of foreign CAD files.