delete @{$form}{qw(id subject message cc bcc printed emailed queued creditlimit creditremaining discount tradediscount oldinvtotal closed delivered)};
for $i (1 .. $form->{rowcount}) {
delete @{$form}{qw(id subject message cc bcc printed emailed queued creditlimit creditremaining discount tradediscount oldinvtotal closed delivered)};
for $i (1 .. $form->{rowcount}) {