Move a site to a new domain

Move a site workflow:

1. Delete existing domain mappings for the site.
2. wp search replace $old_url $new_url --all-tables; wp cache flush, avoiding trailing slashes.
3. wp rewrite flush --url=$new_url; wp rewrite flush;
4. Login to the network site, edit the site, press Save Changes. (not sure why)
5. Verify site loads and login works.
6. re-add domain.
7. restart browsers because of cached redirects.