[Orionpkmyz1]

Hello. I've been using Calibre to manage and send books to my Kindle Oasis 2. I notice that every time I add new books to my Kindle, the same six other older books (that have been loaded and indexed before) get re-indexed again. I've tried deleting them from the Kindle and from Calibre, re-downloading them from Amazon, adding them again but that didn't solve it, the dang books keep getting indexed again and again. What gives? Thanks for any insight!