It's just to copy all params form the original menu to the joomfish table.
update `jos_jf_content` c, `jos_menu` m set c.`value` = m.params where `reference_table`='menu' and `reference_id` = m.id and menutype = 'keyconcepts' and reference_field = 'params'
This works great, just change the menutype to the one you need to update. The best thing to do is to translate the menu item completely and than execute the SQL, also works for the menu icons.