+sub save_periodic_invoices_config {
+  my ($self, %params) = @_;
+
+  return if !$params{oe_id};
+
+  my $config = $params{config_yaml} ? YAML::Load($params{config_yaml}) : undef;
+  return if 'HASH' ne ref $config;
+
+  my $obj  = SL::DB::Manager::PeriodicInvoicesConfig->find_by(oe_id => $params{oe_id})
+          || SL::DB::PeriodicInvoicesConfig->new(oe_id => $params{oe_id});
+  $obj->update_attributes(%{ $config });
+}
+
+sub load_periodic_invoice_config {
+  my $self = shift;
+  my $form = shift;
+
+  delete $form->{periodic_invoices_config};
+
+  if ($form->{id}) {
+    my $config_obj = SL::DB::Manager::PeriodicInvoicesConfig->find_by(oe_id => $form->{id});
+
+    if ($config_obj) {
+      my $config = { map { $_ => $config_obj->$_ } qw(active terminated periodicity start_date_as_date end_date_as_date extend_automatically_by ar_chart_id
+                                                      print printer_id copies) };
+      $form->{periodic_invoices_config} = YAML::Dump($config);
+    }
+  }
+}
+