Throwing errors on rename of computers

I recently red this:

univention-s4search -b CN=MicrosoftDNS,CN=System,$(ucr get samba4/ldap/base) --cross-ncs |grep dn: |grep -vi root
dn: CN=MicrosoftDNS,CN=System,DC=zx01,DC=org,DC=blown-up,DC=com

→ Migration not necessary

ucr get connector/s4/mapping/dns/position
legacy

→ legacy → you should consider the migration.

so my question is…
clearly the "migration " has taken place , but the setting is STILL legacy.

so do I go to step 3?

ucr unset connector/s4/mapping/dns/position
systemctl restart univention-s4-connector

and unset the legacy mode?