Bug 23463: Fix items.cn_sort vs cn_sort

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

C4/Items.pm

@@ -160,6 +160,7 @@ sub AddItemFromMarc {
     $item_values->{more_subfields_xml} = _get_unlinked_subfields_xml($unlinked_item_subfields);
     $item_values->{biblionumber} = $biblionumber;
     $item_values->{cn_source} = delete $item_values->{'items.cn_source'}; # Because of C4::Biblio::_disambiguate
+    $item_values->{cn_sort}   = delete $item_values->{'items.cn_sort'};   # Because of C4::Biblio::_disambiguate
     my $item = Koha::Item->new( $item_values )->store;
     return ( $item->biblionumber, $item->biblioitemnumber, $item->itemnumber );
 }
@@ -239,6 +240,7 @@ sub AddItemBatchFromMarc {
         $item->{'biblionumber'} = $biblionumber;
         $item->{'biblioitemnumber'} = $biblioitemnumber;
         $item->{cn_source} = delete $item->{'items.cn_source'}; # Because of C4::Biblio::_disambiguate
+        $item->{cn_sort}   = delete $item->{'items.cn_sort'};   # Because of C4::Biblio::_disambiguate
 
         # check for duplicate barcode
         my %item_errors = CheckItemPreSave($item);
@@ -281,6 +283,7 @@ sub ModItemFromMarc {
     my $item_object = Koha::Items->find($itemnumber);
     my $item = TransformMarcToKoha( $localitemmarc, $frameworkcode, 'items' );
     $item->{cn_source} = delete $item->{'items.cn_source'}; # Because of C4::Biblio::_disambiguate
+    $item->{cn_sort}   = delete $item->{'items.cn_sort'};   # Because of C4::Biblio::_disambiguate
     $item->{itemnumber} = $itemnumber;
     $item->{biblionumber} = $biblionumber;
     $item_object = $item_object->set_or_blank($item);