Looks like Apple fixed a bug that was actually a feature.
Mark Munz wonders what this means for upgrades, e.g. to iLife/iWork. If the new version is a free update, which the Mac App Store sees as the same product, people with older OS versions will not be able to download the old version. But, with this change, the old version will become inaccessible even if the new version is a new product.
Because the Mac App Store doesn’t let you go back to a previous version, even if the new version has a bug, I’ve been saving each app update that I download. I have a DropDMG configuration called “Mac App Store” that compresses the app, puts its version number in the filename, and saves it in my archives folder.
Stay up-to-date by subscribing to the Comments RSS Feed for this post.