[knot-dns-users] Master-slave replication

Hello I have some zones in 2 knots in a master-slave relation When I update zones in master, there are replications issues in slave: - sometime changed records are duplicated (old and new value) - sometime removed records persists - sometime the RRSIG records are duplicated (old and new value) I often have to erase slave zones and to restart knot to get correct zone. I update master zone via makefiles that re-create (unsigned) zone files and then reload knot via knotc What is my mistake ? Regards, -- Bastien