Every Drupal 7 to Drupal 11 migration we run follows the same 52 steps in the same order — audit, content model, module mapping, the 301 map, build, verification, and a cutover designed so rollback is one DNS change away. The full checklist, with the reasoning behind each step and a printable summary card.

来源：https://gspikes.com/drupal-7-to-drupal-11-migration-checklist/