for panelid in 10 11; do
  xfconf-query -c xfce4-panel -p "/panels/panel-${panelid}/plugin-ids" -c "$(while read -r id; do printf -- '-t int -s %i' "$id"; done < <(xfconf-query -c xfce4-panel -p /panels/panel-1/plugin-ids | tail -n +3))" -a;
done