Indiana Code Title 36. Local Government § 36-2-17-9

Sec. 9. (a) If all or part of the records of the recorder's office are destroyed, the recorder shall immediately obtain a book in which the recorder shall restore the destroyed parts of the record.  The recorder shall, in the order in which they are presented, record in this book documents that had been recorded but the records of which have been destroyed.  The recorder shall also record the recorder's original indorsement showing the time when each document was originally filed for record.  This new record has the same force as the original record would have had if it had not been destroyed.

(b) Whenever the recorder acts under subsection (a), the recorder shall also obtain another book in which the recorder shall, in the order in which it is presented, record all proof of the execution, acknowledgment, contents, destruction, and recording of documents that had been recorded in the recorder's office but the records of which have been destroyed.  The recorder shall index this book in the manner in which records of deeds are indexed.