I would love the possibility of bringing up a test CAS server and get it all configured for live users (on a temporary system) and then be able to export that data and move it to a real production system without having to reconfigure it from scratch.
My example is that I don't have the production live hardware yet (it is currently configured as an OWA 2003 front end server, 2 load balanced servers). I would like to bring up the first CAS on a server that is going to be out of warranty next year and configure it for our organization and then when we get closer to the cutover of all mailboxes, I would like to rebuild our present OWA servers (one at a time) to be the permanent CAS's (it is x64) and having the ability to export from the temp CAS and import to the new CAS's would be the most ideal way of doing it if possible.