Attempting to correct issues with field_visible not migrating.
Upgrading to Drupal 7.18
Upgrading context to 7.x-3.0-beta6.
Upgrading entity to 7.x-1.0.
Upgrading rules to 7.x-2.2.
Upgrading field_collection to 7.x-1.0-beta5.
Properly setting bundle titles when migrating.
Migrating discussion comments.