[ ] Inventory: content types, counts, languages, files, users, orders
[ ] Decided what is NOT migrated
[ ] Mapping old -> new content types and fields written down
[ ] URL rules decided (see URLs and redirects when migrating)
[ ] Backup of the old site made and restore tested
[ ] Staging copy of the new site ready

[ ] Full run on staging, every step timed
[ ] Counts compared: old vs new, per content type and language
[ ] Samples checked by the content lead (text, images, relations, dates)
[ ] Search reindexed and tried
[ ] URL aliases rebuilt for every language; old addresses redirect
[ ] Forms, store, sign-ins tested
[ ] Problems logged and fixed before the next rehearsal

[ ] Date outside the busiest season; everyone informed
[ ] Content freeze announced and started
[ ] Maintenance mode on (see Maintenance mode and planned work)
[ ] Final run with the measured steps
[ ] Checks from the rehearsal repeated
[ ] Maintenance mode off; DNS or proxy switched

[ ] Old site kept read-only with backups until acceptance
[ ] Rollback plan still valid during the agreed window
[ ] Error log and 404s watched daily for two weeks
[ ] Editors told what changed; first questions answered
[ ] Acceptance signed by the owner