[Koha] Bulk return

Please advice me on following... Recently we failed to use LMS KOHA due to some technical problem. At that time we have done bulk return of books of about 12, 000. We have maintained the bar code of these returned books in excel spreadsheet. Is there any provision to return this book in KOHA in one go, or need I return the book one by one. Jameela at Indian Naval Academy Library