doveadm replicator command

[Ivo]

Can someone please explain to me what do commands "doveadm replicator 
add" and "doveadm replicator remove" really do.
According to https://wiki.dovecot.org/Tools/Doveadm/Replicator they "Add 
the specified user(s) to the replicator." and
"Remove the specified user from replicator.".
Do they really do that?
Since the default list of users for replication comes from doveadm user 
'*' (https://wiki.dovecot.org/Replication) I tried removing one user 
(e.g. xyz) from replication by using "doveadm replicator remove xyz" and 
it didn't work. Namely, after entering that command the only thing that 
I noticed is that "doveadm replicator status xyz" does not return any 
information. BUT, as soon as one mail arrives for that user "doveadm 
replicator status xyz" displays valid information and mail is replicated.

Thanks in advance for any reply.


# dovecot --version
2.2.33.2 (d6601f4ec)