SharePoint 2010 Site Columns for Managed Metadata

I'm still not 100% sure how references to the Managed Metadata Term Stores work. But the Content Type I recently created used one and I'm hoping to get a chance to digest this further soon.

For instance, if I make a feature that pushes out this Site Column, will the GUIDs line up with the external Term Store as long as I use the export/import feature on the Managed Metadata Service?

While I ponder those things, here is the XML for what a site column that refers to the term store. As you can see, it's split across several SPFields.