The same thing happens to the theme - I have a portal deployed in a war, and when I changed the theme.id, the theme didn't change (after restart). Only after deleting data/portal/hypersonic did I see the change.
in 2.2 the deployment descriptor is a feed for the database, otherwise we could not implement dynamicity.
it is used only one time when the entry in the container does not exist and then is not used anymore.
so you should not use it like that unless you recreate the db on each startup.
maybe i don't understand the title but here is the question:
how can i change the name of the portal in the browser? i deployed the helloworld portal but the title its jboss portal 2.2.rc1......