Question: If I unpublish my ebook will I lose all of my rankings and reviews?
Answer: Rankings? Tags?
When I logged in to check my ebooks yesterday (to confirm all was still well), I noticed that The Guardian's reviews were re-posted!
So I unpublished, uploaded the DRM-Free version, everything went well, and now . . . the old reviews are linked to the new version.
It took four additional days after the new book went live, but they're available! I plan to link this update to my original post. Because it is, in fact, A New Development.