How to migrate Upfront site to a new host

I often set my client sites on my own sub-domain and then migrate them to the final host but I haven’t done that yet with any WPMU based sites yet.

I have been using the Upfront framework exclusively for the past few months and have generally built sites directly on the final host location but my last few have been built on my own sub-domain.

Is there a particular method of migrating an Upfront based site without losing all of the front end set up?

Any tips that you could provide me on this would be awesome.

Cheers… Brett