If the last item at a location has a status that is not opac visible, then the only way to view it is through holdings maintenance, even though the staff client reports 0/1 (available/total), there is no call number row displayed.
On the other hand, if there are say 4 damaged items, and still one available, you can see the details (i.e. barcode, status, location, etc) for all 5.
