I've my wpmu network with wordpress 2.9 on a server.(travellertribe.com)
Now I would like to move it in another server and, with this occasion, upgrade to wp 3.1 and istall buddypress.
Since I've seen several differences between wp 2.9 and 3 , including the "mu-plugin folder" in wp-content, my questions is:
1) it is a wise chooise to just upgrade my current version and than move to the new server?
I means, does this way can somehow hurt the DB or folder structure and penalize me with bugs, problem or SEO issues?
2) Does there is a way to easly backup all the installation and move it in another server?
I've an english installation in the root an in a it. subdomain an installation for italian content.
Now I would like to merge this, and other languare in the nexts months, with the MultiDomain Plugin.
There is a way to import all the blogs/sites on it. subdomain in the plug-in so user can have access both in english and other language version with the same account?