Family search suggests me unavaible registers

I was utterly surprised and happy that I had lots of suggestions about my family from Potenza because much of them have remained a mistery, but I-ve got deceived that I cannot see those registers because on account of the site: "This Record has been removed.Unfortunately, the record that you requested is no longer available. If you arrived here from a bookmark, please delete your bookmark." What's happenning and why have you deleted those? I hope that this is an error! To be precise the records have the name Italy, Potenza, Archdiocese of Potenza, Catholic Church Records, 1572-1900