My Dsync isn't replicating 'EXPUNGE' IMAP command

[Listas@Adminlinux]

Hi!

I have two Dovecot-2.2.13 servers with Dsync Replication: server1 and 
server2.

When I execute 'EXPUNGE' on server1 side, the messages with FLAG 
\Deleted are expunged only on server1. The message is still present in 
Server2.

Could someone give me a hint reason for this ?
Thanks in advance!
--
Thiago Henrique

======================================================================
How I reproduce:

== ON SERVER1 ==

Client:         $ telnet <IP server1> 143
		Trying <IP server1>...
		Connected to <IP server1>.
		Escape character is '^]'.
Server:		* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID 
ENABLE IDLE AUTH=PLAIN AUTH=LOGIN] MAILBOX1 IMAP/POP3 server

Client:		AUTH LOGIN <user> <pass>
Server:		AUTH OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS 
ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS 
THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN 
NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH 
ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS SPECIAL-USE BINARY 
MOVE QUOTA] Logged in

Client:		A002 SELECT "INBOX"
Server:		* FLAGS (\Answered \Flagged \Deleted \Seen \Draft nonjunk)
		* OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft nonjunk 
\*)] Flags permitted.
		* 2 EXISTS
		* 0 RECENT
		* OK [UNSEEN 1] First unseen.
		* OK [UIDVALIDITY 1410284221] UIDs valid
		* OK [UIDNEXT 16] Predicted next UID
		* OK [HIGHESTMODSEQ 56] Highest
		A002 OK [READ-WRITE] Select completed (0.000 secs).

Client:		A003 FETCH 1:* (UID FLAGS)
Server:		* 1 FETCH (UID 13 FLAGS (nonjunk))
		* 2 FETCH (UID 15 FLAGS (nonjunk))
		A003 OK Fetch completed.

Client:		A005 STORE 1 +FLAGS \Deleted
Server:		* 1 FETCH (FLAGS (\Deleted nonjunk))
		A005 OK Store completed.

Client:		A003 FETCH 1:* (UID FLAGS)
Server:		* 1 FETCH (UID 13 FLAGS (\Deleted nonjunk))
		* 2 FETCH (UID 15 FLAGS (nonjunk))
		A003 OK Fetch completed.

Client:		A006 EXPUNGE
Server:		* 1 EXPUNGE
		A006 OK Expunge completed.

Client:		A007 FETCH 1:* (UID FLAGS)
Server:		* 1 FETCH (UID 15 FLAGS (nonjunk))
		A007 OK Fetch completed.

Client:		A008 LOGOUT
Server:		* BYE Logging out
		A008 OK Logout completed.
		Connection closed by foreign host.

== ON SERVER2 ==

Client:		$ telnet <IP server2> 143
		Trying <IP server2>...
		Connected to <IP server2>.
		Escape character is '^]'.
Server:		* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID 
ENABLE IDLE AUTH=PLAIN AUTH=LOGIN] MAILBOX2 IMAP/POP3 server

Client:		AUTH LOGIN <user> <pass>
Server:		AUTH OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS 
ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS 
THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN 
NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH 
ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS SPECIAL-USE BINARY 
MOVE QUOTA] Logged in

Client:		A002 SELECT "INBOX"
Server:		* FLAGS (\Answered \Flagged \Deleted \Seen \Draft nonjunk)
		* OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft nonjunk 
\*)] Flags permitted.
		* 2 EXISTS
		* 0 RECENT
		* OK [UNSEEN 1] First unseen.
		* OK [UIDVALIDITY 1410284221] UIDs valid
		* OK [UIDNEXT 17] Predicted next UID
		* OK [HIGHESTMODSEQ 61] Highest
		A002 OK [READ-WRITE] Select completed (0.000 secs).

Client:		A003 FETCH 1:* (UID FLAGS)
Server:		* 1 FETCH (UID 13 FLAGS (\Deleted nonjunk))
		* 2 FETCH (UID 15 FLAGS (nonjunk))
		A003 OK Fetch completed.

Client:		A008 LOGOUT
Server:		* BYE Logging out
		A008 OK Logout completed.
		Connection closed by foreign host.


= My settings =

* My settins age identical on both server1 and server2, except by 
'listen', 'address' and 'mail_replica' directives.

# doveconf -n
# 2.2.13 (6bb26098a45c): /etc/dovecot/dovecot.conf
# OS: Linux 3.13.0-30-generic x86_64 Ubuntu 14.04.1 LTS
auth_master_user_separator = *
auth_mechanisms = plain login
auth_username_chars = 
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@=
auth_worker_max_count = 1
disable_plaintext_auth = no
doveadm_password = secret
doveadm_port = 12345
listen = server1
log_path = /var/log/dovecot.log
login_greeting = MAILBOX1 IMAP/POP3 server
mail_fsync = never
mail_gid = dovemail
mail_plugins = " notify replication quota"
mail_uid = dovemail
passdb {
   args = /etc/dovecot/dovecot-sql.conf.ext
   driver = sql
}
passdb {
   args = /etc/dovecot/dovecot-sql-master.conf.ext
   driver = sql
   master = yes
   pass = yes
}
plugin {
   mail_replica = tcp:server2:12345
   quota = dict:User quota::file:/var/lib/imap/%n/dovecot-quota
   quota_rule = *:storage=1GB
}
protocols = imap pop3 lmtp
service aggregator {
   fifo_listener replication-notify-fifo {
     user = dovemail
   }
   unix_listener replication-notify {
     user = dovemail
   }
}
service auth-worker {
   user = $default_internal_user
}
service auth {
   client_limit = 1024
   process_limit = 1
   process_min_avail = 1
}
service doveadm {
   inet_listener {
     port = 12345
   }
}
service imap {
   process_limit = 1024
   process_min_avail = 1
}
service lmtp {
   inet_listener {
     address = server1
     port = 24
   }
   process_limit = 256
   process_min_avail = 1
}
service pop3-login {
   inet_listener pop3 {
     address = server1
     port = 110
   }
}
service pop3 {
   process_limit = 256
   process_min_avail = 1
}
service replicator {
   process_min_avail = 1
}
ssl = no
userdb {
   driver = prefetch
}
userdb {
   args = /etc/dovecot/dovecot-sql.conf.ext
   driver = sql
}
verbose_proctitle = yes
protocol imap {
   imap_client_workarounds = tb-extra-mailbox-sep
   imap_idle_notify_interval = 2 mins
   imap_max_line_length = 64 k
   mail_max_userip_connections = 50
   mail_plugins = " notify replication quota imap_quota"
}
protocol lmtp {
   mail_fsync = optimized
   mail_plugins = " notify replication sieve quota"
}
protocol pop3 {
   mail_plugins = " notify replication quota"
}