[Koha] relevance problem

Hello everyone, I have problem with relevance. When I search and set relevance as ‘Publication/Copyright date: newest to oldest’, Koha returns records without any order? What may cause a problem? Best regards, Paweł Niedźwiadek -- Sent from: http://koha.1045719.n5.nabble.com/Koha-general-f3047918.html