wpml-config.xml

<wpml-config>
  <admin-texts>
    <key name="helpful_options">
      <key name="helpful_heading"/>
      <key name="helpful_content"/>
      <key name="helpful_exists"/>
      <key name="helpful_after_pro"/>
      <key name="helpful_after_contra"/>
      <key name="helpful_after_fallback"/>
      <key name="helpful_pro"/>
      <key name="helpful_contra"/>
      <key name="helpful_column_pro"/>
      <key name="helpful_column_contra"/>
      <key name="helpful_column_feedback"/>
      <key name="helpful_feedback_message_pro"/>
      <key name="helpful_feedback_message_contra"/>
      <key name="helpful_feedback_message_spam"/>
      <key name="helpful_feedback_label_message"/>
      <key name="helpful_feedback_label_name"/>
      <key name="helpful_feedback_label_email"/>
      <key name="helpful_feedback_label_submit"/>
      <key name="helpful_feedback_label_cancel"/>
      <key name="helpful_feedback_message_voted"/>
      <key name="helpful_feedback_subject"/>
      <key name="helpful_feedback_email_content"/>
      <key name="helpful_feedback_subject_voter"/>
      <key name="helpful_feedback_email_content_voter"/>
    </key>
  </admin-texts>
</wpml-config>