Changing name of windows computer, casues error in ldap

I worked my way thru:

i get the following:
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=mydomain,DC=com

(which indicates it is ok)
BUT!!!

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

could it be all my errors are caused because the s4 connector is still on “legacy”?

and should i progress to : STEP 3 ?