Hi I am trying to keep common properties of base class in one location and use XML ENTITY to refer in Nhibernate mapping file.
Mapping file
It is broken in the current release. I had the same problem and i have tested versions 2.0.1, 2.1.0, 2.1.1, 2.1.2 and it was broken
If i read this correctly, its not going to be fixed and it seems that it is a left over in the reference documentation