Deployed site xml does not preserve license header (and much more)

I just noticed that during release/deployment we lose our site.xml
license header! (furthermore it changes the encoding, loose the declared
namespaces, and many other informations written in the site.xml)

I don't know what is the plugin that rewrites the site.xml . I wrote to dev@maven list but received no answer/pointer, so I open the issue in the release plugin (I guess this is the one writing the release poms/xmls descriptors)

Here is our original site.xml:
http://svn.apache.org/repos/asf/james/project/tags/james-project-1.2/src/site/site.xml
And here how it's been deployed:
http://people.apache.org/~norman/staging-repository/org/apache/james/james-project/1.2/james-project-1.2-site.xml