Appears after i import the WPMU's XML file in to the Wordpress 3. install, I lose a lot of Pages/Posts/Groups. I'm now leaning towards just by hand moving within the tables from WPMU to WP3.. Yet, after i perform a dump of just wordpress_posts I recieve a sql error - making me think moving the db tables from WPMU to WP3. could be more complex.

Any help could be appreciated in determining how you can properly make room these tables and so i do not have to perform the XML export/import all day long without any results.

What exactly are you attempting to do, exactly? Upgrade?

If that's the case, that isn't how. )

I really should understand what problem youre attempting to solve by going this route, in order to provide the best response to what for you to do.