Hi all, We have been using Koha version 16.11.07.000 . We found a strange problem, for around 35 books. These books have been borrowed(checked out) earlier by the patrons and they have the books with them. But in Koha, the books are available for checkout to others. This results in chaos!! Example - The book Lunch Money(partial title) in Patron Dhyans name This particular book(1 item under the biblio) has different statuses in different screens. 1. Search in OPAC - Shows as Available - this is OK 2. Search as Admin in Staff client - shows status as blank - this seems to be abnormal 3. Search results when searched in Cataloging Search - shows Location as Checked out - this seems to be abnormal 4. In the checkout history of the book, the latest entry shows Patron Dhyan and checked out in the returned date field - this seems to be abnormal 5. In the patron screen, against Dhyan, Checked out books doesnt show this book - OK 6. In the self checkout screen after logging in as Dhyan, I do not see this book in the list of books currently checked out to me. - this is OK. 7. But please note, nobody checked in this book ever. There were other books checked in against Dhyan, but not this book. The book is still with Dhyan and he is unable to checkin this book. But in Koha, this book can be checked out to others!! How to prevent this issue in future ? - We believe this is a symptom of Bug 18651 as there is entry for the book in old_issues table though checkin has not happened. It would be great if someone could confirm on this. By the way, just today, the 17.05.01 version update happened where 18651 is fixed. Then, maybe the issue will not happen in future. If this is not bug 18651, we are keen to know how this can be prevented. What about the 35 books where the data is incorrect ? How do we get it corrected ? Looking forward to help from the community, -- Regards, Krishna