Hello John,
After a little investigation it appears that some of the components that have a "DB_UNITS" attribute with a set value follow that behavior of being added as "Non Geometric". GTAC explains that also as a "by design" intent on that NX version...
Since I am just testing some of our .NET programs in Native mode and that attribute is set blank in our Teamcenter production mode the plroblem is solved!
Thank you.
D.