accesslog-based consumer stuck on objectClass modify on provider

Hi all,

yesterday I changed a structural objectClass for a entry with the relax control (control: 1.3.6.1.4.1.4203.666.5.12):

dn: uid=cognos,ou=agents,dc=example,dc=org control: 1.3.6.1.4.1.4203.666.5.12 changetype: modify replace: objectClass objectClass: inetOrgPerson - add: sn sn: cognos

On provider all ok. Provider is mirrormode and other mirror side is ok.

The accesslog-based syncrepl on a consumer was stuck. Neither the modify nor the other next modifies were propagated.

Is relax control unsupported in this scenario? Did I forget something really important?

thank you,

Francesco

PS: I deleted on provider from accesslog db the entry corresponding to the said modify, restarted both consumer and provider and replica started again.