So, Amazon appears to have finally worked things out. As I mentioned in my earlier post, I had moved three of my print titles over to KDP Print from CreateSpace. I moved them one at a time, using the Create Paperback link on KDP, and I was able to keep the same ISBNs (I own the ISBNs for all my books; I purchased them from Bowker). The reason I could keep the ISBNs is that the interface asked me if they were published on CS and gave me a chance to enter the ISBN. Amazon has changed that protocol so that the KDP Create Paperback button didn't allow using an existing ISBN.
Amazon was working on a way to move all a writer/publisher's CS titles to KDP in a single step. They had a link for it on the KDP bookshelf weeks ago, but it didn't work! Apparently, they unplugged one way to move titles before making sure the new way worked. After a while, they took that link away, but it returned a couple of days ago, and I was able to use it successfully, if not seamlessly.
At the point in time I clicked the link, I had five titles in CS. One was in draft because I am having problems with that cover and I cannot fix them myself. One of the five I had approved for sale recently, even though the cover needs work because they are things I can fix, and I wasn't sure it would move to KDP if it was still in draft. The other three had all been for sale for sometime and were properly linked to their Kindle versions on their Amazon product pages.
So, once I clicked the "Move my titles" link on the KDP bookshelf, I got the page with the three buttons: validate my CS account, validate my KDP account, and move the books. This time all three buttons seemed to work! When it was done, everything disappeared from CS. The account was still there, but there were NO books listed.
In KDP, results were less uniform. One of the titles moved over perfectly, and was already linked to the Kindle version. The other titles have moved over but had not linked automatically. When a book exists in KDP in two formats, if they are properly linked, there is only one entry on the bookshelf, like this:
Each format has its own menu to edit content, details, etc., but they are one title. If there is only one format, the entry on the bookshelf looks like this:
If the book is a Kindle book, the links are for creating or linking a paperback, and if it's a paperback, the links are for creating or linking a Kindle version. For four of the five books I moved over in one step, KDP created a second entry on the bookshelf instead of linking them. When I tried to link them myself, using the Link to Existing Paperback on the Kindle bookshelf entry, it did not work, but when I used the Link to Existing Kindle version on the newly-created paperback entries, it worked fine. I was very pleased that the draft CS title with the problematic cover came over just fine, as a draft entry in KDP. And for the one that's in better shape, but isn't really ready for prime time, I was able to pull it off sale by using the Unpublish option on the paperback menu.
My books are all now moved over. Goodbye, CreateSpace. It was nice knowing you,