A few months ago we completed a Drupal 5 to Drupal 7 migration project for a North Carolina museum website. Actually the Drupal 5 site was more of a Frankenstein site; the previous developers had more or less built their own CMS on top of Drupal. Fortunately, the superb Migrate module made writing migration code for this project a snap.
Getting a workflow together, however, was a bit more of a challenge. We had four people working on the project: two developers, a site builder, and a themer.
