dovecot-keywords are not preserved any more when moving mails between folders

[Piper Andreas]

Hello,

after an upgrade of dovecot-2.2.5 to dovecot-2.3.4 the dovecot-keywords,
which in my case are set by thunderbird, are not preserved any more when
moving a mail between folders.

Are there any ideas, what may be the reason.

Thanks for any hints on that,
Andreas

'doveconf -n' gives:

# 2.3.4 (0ecbaf23d): /etc/opt/csw/dovecot/dovecot.conf
# Pigeonhole version 0.5.4 (60b0f48d)
# OS: SunOS 5.11 i86pc
# Hostname: xxxxx.hrz.uni-marburg.de
auth_cache_negative_ttl = 0
auth_cache_size = 10 M
auth_master_user_separator = *
auth_username_chars =
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_
auth_username_format = %u
auth_worker_max_count = 1024
base_dir = /var/run/dovecot/
default_vsz_limit = 1 G
first_valid_gid = 30000
first_valid_uid = 30000
imap_max_line_length = 640 k
mail_debug = yes
mail_location = maildir:%h/.maildir
mail_plugins = " mail_log notify"
mail_privileged_group = mail
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope
encoded-character vacation subaddress comparator-i;ascii-numeric
relational regex imap4flags copy include variables body enotify
environment mailbox date index ihave duplicate mime foreverypart extracttext
namespace {
  hidden = no
  inbox = yes
  list = yes
  location = maildir:%h/.maildir
  prefix =
  separator = /
  subscriptions = yes
  type = private
}
namespace inbox {
  hidden = yes
  inbox = no
  list = no
  location = maildir:%h/.maildir
  prefix = mail/
  separator = /
  subscriptions = no
  type = private
}
passdb {
  args = /etc/dovecot.deny
  deny = yes
  driver = passwd-file
}
passdb {
  args = /etc/opt/csw/dovecot/private/passwd.masterusers
  driver = passwd-file
  master = yes
}
passdb {
  args = /etc/opt/csw/dovecot/dovecot-ldap.conf.ext
  driver = ldap
}
plugin {
  sieve = file:~/sieve;active=~/.dovecot.sieve
  sieve_default = /var/lib/dovecot/default.sieve
}
pop3_uidl_format = %08Xv%08Xu
postmaster_address = postmaster at hrz.uni-marburg.de
protocols = imap pop3 lmtp sieve
service auth-worker {
  user = $default_internal_user
}
service auth {
  client_limit = 6000
}
service imap-login {
  process_min_avail = 64
  service_count = 0
}
service imap {
  process_limit = 4096
}
service lmtp {
  inet_listener lmtp {
    port = 24
  }
}
service managesieve-login {
  inet_listener sieve {
    port = 4190
  }
}
ssl_cert = </etc/opt/csw/ssl/certs/imap+pop.hrz.uni-marburg.de.pem
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
userdb {
  args = /etc/opt/csw/dovecot/dovecot-ldap-userdb.conf.ext
  driver = ldap
}
protocol imap {
  mail_max_userip_connections = 25
  ssl_cert = </etc/opt/csw/ssl/certs/imap+pop.hrz.uni-marburg.de.pem
  ssl_key = # hidden, use -P to show it
}
protocol lmtp {
  mail_plugins = " mail_log notify sieve"
}
protocol pop3 {
  ssl_cert = </etc/opt/csw/ssl/certs/imap+pop.hrz.uni-marburg.de.pem
  ssl_key = # hidden, use -P to show it
}

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