if ($is_delivery_order) {
       map { $form->{"${_}_${i}"} = $form->format_amount(\%myconfig, $form->{"${_}_${i}"}) } qw(sellprice discount lastcost);
-      push @hidden_vars, qw(sellprice discount not_discountable price_factor_id lastcost);
+      push @hidden_vars, qw(sellprice discount not_discountable price_factor_id lastcost pricegroup_id);
       push @hidden_vars, "stock_${stock_in_out}_sum_qty", "stock_${stock_in_out}";
     }