I started out with The Weirld, because I don’t have tons of time today and The Weirld was done in GIMP before. Once I got into it I could see that there was a big difference between what was required for a CreateSpace cover and what Amazon would have you do nowadays. I had to re-do all the text, which meant I had to reassemble the cover. Fortunately I had the art on hand, and because the old file was GIMP anyway, matching colors and fonts was super-easy. I got it done and will order a new proof.
Hopefully this update will settle things for a while—I’m certainly happy that the text on the cover will be sharper. But there’s also a difference in the color values that I’m less thrilled about—the old CreateSpace cover was brighter, while the Amazon cover is more yellow and muted. I don't know if the update will help that in any kind of permanent way—that seems like one of those “perils of changing printers" issues.