# adjust prices by unit, ignore if pricegroup changed
if ((!$form->{"prices_$i"}) || ($form->{"new_pricegroup_$i"} == $form->{"old_pricegroup_$i"})) {
$form->{"sellprice_$i"} *= AM->convert_unit($form->{"selected_unit_$i"}, $form->{"unit_old_$i"}, $all_units) || 1;
# adjust prices by unit, ignore if pricegroup changed
if ((!$form->{"prices_$i"}) || ($form->{"new_pricegroup_$i"} == $form->{"old_pricegroup_$i"})) {
$form->{"sellprice_$i"} *= AM->convert_unit($form->{"selected_unit_$i"}, $form->{"unit_old_$i"}, $all_units) || 1;