Hi Magnus,
> my $record;
> my $exporter = Catmandu->exporter('MARC', file => \$record, type => "XML" );
> $exporter->add_many($importer);
add_many() expects an array, so you should the to_array() method of the
importer object:
$exporter->add_many($importer->to_array);
Best regards,
Johann