--- /dev/null
+use strict;
+use warnings;
+
+use Test::More;
+use lib qw(t/lib);
+use DBICTest;
+
+my $schema = DBICTest::init_schema();
+
+plan tests => 4;
+my $artist = $schema->resultset('Artist')->find(1);
+my $artist_cds = $artist->search_related('cds');
+
+my $cover_band;
+
+{
+ no warnings 'redefine';
+ local *DBICTest::Artist::result_source_instance = \&DBICTest::Schema::Artist::result_source_instance;
+
+ $cover_band = $artist->copy;
+}
+
+my $cover_cds = $cover_band->search_related('cds');
+cmp_ok($cover_band->id, '!=', $artist->id, 'ok got new column id...');
+is($cover_cds->count, $artist_cds->count, 'duplicated rows count ok');
+
+#check multi-keyed
+cmp_ok($cover_band->search_related('twokeys')->count, '>', 0, 'duplicated multiPK ok');
+
+#and check copying a few relations away
+cmp_ok($cover_cds->search_related('tags')->count, '==',
+ $artist_cds->search_related('tags')->count , 'duplicated count ok');
+