-  $self->{posting_options} = [ { title => $::locale->text("never"), value => 0 },
-                               { title => $::locale->text("every time"), value => 1 },
-                               { title => $::locale->text("on the same day"), value => 2 }, ];
-  $self->{payment_options} = [ { title => $::locale->text("never"), value => 0 },
-                               { title => $::locale->text("every time"), value => 1 },
-                               { title => $::locale->text("on the same day"), value => 2 }, ];
-  $self->{accounting_options} = [ { title => $::locale->text("Accrual"), value => "accrual" },
-                                  { title => $::locale->text("cash"), value => "cash" }, ];
-  $self->{inventory_options} = [ { title => $::locale->text("perpetual"), value => "perpetual" },
-                                 { title => $::locale->text("periodic"), value => "periodic" }, ];
-  $self->{profit_options} = [ { title => $::locale->text("balance"), value => "balance" },
-                              { title => $::locale->text("income"), value => "income" }, ];
-
-  map { $self->{$_} = SL::DB::Default->get->$_ } qw(is_changeable ir_changeable ar_changeable ap_changeable gl_changeable);
-
-  $self->{payments_changeable} = SL::DB::Default->get->payments_changeable;
-
-  map { $self->{$_} = SL::DB::Default->get->$_ } qw(is_show_mark_as_paid ir_show_mark_as_paid ar_show_mark_as_paid ap_show_mark_as_paid);
-
-  map { $self->{$_} = SL::DB::Default->get->$_ } qw(accounting_method inventory_system profit_determination);
-
-  $self->{show_bestbefore}     = SL::DB::Default->get->show_bestbefore;
-
-  map { $self->{$_} = SL::DB::Default->get->$_ } qw(datev_check_on_sales_invoice datev_check_on_purchase_invoice datev_check_on_ar_transaction datev_check_on_ap_transaction datev_check_on_gl_transaction);
-  # datev check: not implemented yet:
-  #check_on_cash_and_receipt = 0
-  #check_on_dunning = 0
-  #check_on_sepa_import = 0
-
-  map { $self->{$_} = SL::DB::Default->get->$_ } qw(sales_order_show_delete purchase_order_show_delete sales_delivery_order_show_delete purchase_delivery_order_show_delete);
-
-  # All warehouse / transfer default values
-  map { $self->{$_} = SL::DB::Default->get->$_ } qw(transfer_default transfer_default_use_master_default_bin transfer_default_ignore_onhand
-                                                    warehouse_id_ignore_onhand bin_id_ignore_onhand warehouse_id bin_id);
-
-  # for the default warehouse and bin we get the list and
-  # set a empty value with warehouse_id and bin_id = 0
-  map { $self->{$_} = SL::DB::Default->get->$_ } qw(warehouse_id bin_id);
-  $::form->get_lists('warehouses' => { 'key'    => 'WAREHOUSES',
-                                       'bins'   => 'BINS', });
-  $self->{WAREHOUSES} = $::form->{WAREHOUSES};
-  # leerer lagerplatz mit id 0
-  my $no_default_bin_entry = { 'id' => '0', description => '--', 'BINS' => [ { id => '0', description => ''} ] };
-  push @ { $self->{WAREHOUSES} }, $no_default_bin_entry;
-
-  # set defaults to empty
-  if (my $max = scalar @{ $self->{WAREHOUSES} }) {
-    $self->{warehouse_id} ||= $self->{WAREHOUSES}->[$max -1]->{id};
-    $self->{bin_id}       ||= $self->{WAREHOUSES}->[$max -1]->{BINS}->[0]->{id};
-    $self->{warehouse_id_ignore_onhand} ||= $self->{WAREHOUSES}->[$max -1]->{id};
-    $self->{bin_id_ignore_onhand}       ||= $self->{WAREHOUSES}->[$max -1]->{BINS}->[0]->{id};
+  $::form->{use_templates} = $self->defaults->templates ? 'existing' : 'new';
+  $::form->{feature_datev} = $self->defaults->feature_datev;
+  $self->edit_form;
+}
+
+sub action_save {
+  my ($self, %params)      = @_;
+
+  my $defaults             = delete($::form->{defaults}) || {};
+  my $entered_currencies   = delete($::form->{currencies}) || [];
+  my $original_currency_id = $self->defaults->currency_id;
+  $defaults->{disabled_price_sources} ||= [];
+
+  # undef several fields if an empty value has been selected.
+  foreach (qw(warehouse_id bin_id warehouse_id_ignore_onhand bin_id_ignore_onhand)) {
+    undef $defaults->{$_} if !$defaults->{$_};