BOA debian upgrade

Hi - I have been running the BOA flavour of Aegir on my server for quite a while now and have some dev and prod sites running. Something which is nagging me a bit is the fact that the server is running on debian 5 as it was prior to the debian 6 release. I was just wondering what some of you thought would be the best approach to upgrade - can I just follow the usual distro upgrade route based on the many guides out there or do you think it is best to spin up another server based on debian 6 and set BOA up from scratch on that then import the sites across?