View file PF.Base/module/feed/install/version/3.4.0rc1.xml.php
<upgrade>
<sql><![CDATA[a:1:{s:7:"ADD_KEY";a:1:{s:11:"phpfox_feed";a:1:{s:9:"privacy_5";a:2:{i:0;s:5:"INDEX";i:1;a:2:{i:0;s:7:"privacy";i:1;s:14:"parent_user_id";}}}}}]]></sql>
</upgrade>