fedora 20 roundcubemail upgrade conflict

[kolab.user at use.startmail.com]

Transaction check error:
  file /var/lib/roundcubemail from install of roundcubemail-1.1.0-1.fc20.noarch conflicts with file from package roundcubemail-plugins-kolab-3.2-17.9.fc20.kolab_3.3.noarch
  file /usr/share/roundcubemail/plugins/enigma/home from install of roundcubemail-1.1.0-1.fc20.noarch conflicts with file from package roundcubemail-1.1-20.9.fc20.kolab_3.3.noarch

I wonder why roundcubemail-plugins-kolab and roundcubemail packages include the same files into their packages and how to overcome the conflict.