With other cms texts I have similar problem.
For example,with Terms and conditions of use i have communique:
Duplicate entry '3-1' for key 'PRIMARY'
INSERT INTO `ps_cms_lang` (`id_cms`, `meta_description`, `meta_keywords`, `meta_title`, `link_rewrite`, `content`, `id_lang`, `id_shop`) VALUES ('3', '', '', 'warunki', 'warunki', '', '1', '1')