if ($old_form) {
$old_form = YAML::Load($old_form);
- my %dont_save_vars = map { $_ => 1 } @Drafts::dont_save;
+ my %dont_save_vars = map { $_ => 1 } Drafts->dont_save;
my @restore_vars = grep { !$dont_save_vars{$_} } keys %{ $old_form };
@{$form}{@restore_vars} = @{$old_form}{@restore_vars};