No Issue associated. A replication server RS registers under cn=monitor one entry for each peer RS, and one entry for each LS remotely connected to the peer RS (Undirect LDAP server entry). When 
the remote RS has new LS connecting to it, or LS disconnecting from it, it notifies the other RSes .. that's fine.
But when the connection between our RS and the peer RS itself is broken, some entities remains under cn=monitor while they should be removed.