+ # add hidden ids for persistent (item|invoice)_ids and previous (converted_from*) ids
+ if ($is_quotation) {
+ push @hidden_vars, qw(orderitems_id);
+ }
+ if ($is_s_p_order) {
+ push @hidden_vars, qw(orderitems_id converted_from_quotation_orderitems_id);
+ }
+ if ($is_invoice) {
+ push @hidden_vars, qw(invoice_id converted_from_orderitems_id converted_from_delivery_order_items_id);
+ }
+ if ($::form->{type} =~ /credit_note/) {
+ push @hidden_vars, qw(invoice_id converted_from_invoice_id);
+ }
+ if ($is_delivery_order) {