Francisco,

>1) the reverse engineer write 104 in the logical values of the business object (kbizness.vcx)
>
>2) i create a new classlib when i put a new class from the kbizness.vcx but when i make roundtrip the visual uml write the same name class but overwrite my father class.

There's really nothing unique about Mere Mortals classes that would make this work or not... Have you tried deleting KBizObj from your diagram and tried it again? Are other logical properties getting written to the diagram correctly?

Regards,