Correction: I just downloaded a new book to my computer, not to the Kindle, but I did specify my Gen 11 instead of my old Gen 7. I have not processed it through Calibre yet or copied it to my Gen 11.
I downloaded the book to my laptop and returned it to the state eBook library and then deleted it from Amazon content.
Even though I haven't processed the book through Calibre yet to my Kindle Gen 11. ALL OF MY COLLECTION organization came back on the new PW 5 Gen 11!!!