The upgrade path from Drupal 6 to Drupal 7 is very challenging. This meeting doesn't have a speaker, but instead will be an informal discussion of the various methods and pitfalls of upgrading. Whether you have done it several times, are in the middle of the process, or are thinking about it, we'd like to hear what you have to say. Plus, good food and beer.
http://www.meetup.com/Greater-Kansas-City-Drupal-User-Group/events/48529722/