How to obtain the appearance and perform tessellation for parts with Assembly features

The sample is having parts with the Assembly feature (Assembly cut) which is having a reference to the feature (Cut) present in the Assembly.

When I tried to tessellate the part by surfaces the Cut feature is not present.

Also, when trying to select the surfaces using the pfcCreateModelItemSelection method results in a pfcXInvalidSelection exception.

I am using Creo parametric version 8.0.2.0 with the Creo Object toolkit C++.