[Serialization] IBM-SE-010: Namespace nodes after round-trip

Serialization Section 4, "XML Output Method": The statement in Bullet 6 is 
backward. Additional namespace nodes may be generated if the serialization 
process FAILS to undeclare namespaces. In addition, the namespace nodes 
may be different after round-tripping because the process of constructing 
an element node from an infoset may ignore namespaces that are not used in 
element or attribute names (see Data Model Section 6.2.4, Element Node 
Construction from Infoset".)

--Don Chamberlin