Upgrading a complex Drupal site can be a tricky proposition. This post will explore using the Migrate module to bring users and their role assignments from a D6 site to a fresh new D7 site. We created similar migration classes for taxonomy terms, nodes, and comments, which will not be covered (see the 'Resources' section below, or leave a comment if you need some direction). This is a followup to my last post about upgrading from Drupal 6 to Drupal 7, and presents a potential alternative approach.
