[Plugin: WordPress MU Sitewide Tags Pages] Populate Sitewide Tags blog via Import Posts ?

Is it possible to populate the sitewide tags blog (in my case, my main blog) with the sitewide posts when I import the posts into the respective blogs ?

This is because I am doing a migration of a network of sites from Movable Type to WordPress, and I would like all the posts to be listed accordingly on the main blog.