No contacts in roundcube

I hope someone can help me. Today one of users reported that there are 
no contacts in roundcube.

I found that contacts are present in his imap spool. I deleted 
cyrus.cache and cyrus.index files an then reconstruct with:

/usr/lib/cyrus-imapd/reconstruct -rfx user/[my_user]/Contacts@[my_domain]

...nothing changed


I also tried to clear roundcube cache:

php -f plugins/libkolab/bin/modcache.sh clear -v -u [user_email] -h 
localhost

...this didn't help eather


Then I tried to clear roundcube mysql contacts cache... no luck.


Now I'm out of ideas.

Contacts map is subscribed and according to roundcube it contains 14 
messages. I can also see 14 messages if I run:

kolab list-messages "user/[my_user]/Contacts@[my_domain]"


If I create new contact it is shown in roundcube normally. But 14 old 
contacts are still not there.


Any clue?


Thank you for help!


BR