I'm thinking about migrating a client's website from a super-old cms (xoops) to WP. However the site is quite old so I don't want him to lose any SEO juice he acquired through the years (PR: 2). Anything I'd have to consider doing the migration? (I was thinking about setting up WP on a separate folder and then moving it to root for the full migration - anything I have to consider here?)
Thanks a lot!
Edit: Mike Hudson (comment below) made me aware of an error. I thought PR = Ranking in the results. Meaning: I'm more concerned with the ranking than the PR, so redirect is the way to go! Thanks folks!