if ($self->settings->{article_number_policy} eq 'update_prices') {
if ($entry->{part}) {
- map { $entry->{part}->$_( $object->$_ ) } qw(sellprice listprice lastcost);
+ map { $entry->{part}->$_( $object->$_ ) if defined $object->$_ } qw(sellprice listprice lastcost);
# merge prices
my %prices_by_pricegroup_id = map { $_->pricegroup->id => $_ } $entry->{part}->prices, $object->prices;