Does the Product Tree structure & nomenclature are maintained while converting to STP format in Open Plant Modeler? Is the converted model a solid or surface extracted model?

=> Does the Product Tree structure & nomenclature are maintained while converting to STP format in Open Plant Modeler? Is

1.  Product Tree Structure is coming flat at level 1 after opening the converted file in other CAD software like Creo.

2.  Product Tree Structure's node nomenclature has been modified.

=> Is the converted model a solid or surface extracted model?

All 3D geometries are surface type, for example only outer cylindrical surface is created for a pipe