Phil0124 wrote:
Nope. Apps are forever tied to the Apple Id that bought / downloaded them
That can never be changed no matter what you do. Whether Free or Paid it does not matter, they work the same way.
They are licensed to an Apple Id and only that Apple Id can be used to update them.
Could you refer me to some reference on that still being true in the latest versions of OS X? Given the ability to read the bundle contents and execute an app bought by another Apple ID, there's no inherent reason the App Store app could not swap out the license within an existing bundle for a different one. Any part of the bundle that could be read could be reused in the updated bundle, and, e.g., re-signed (or however they implement the association).
I guess it's possible that when I told it to update, it just silently deleted the existing bundle associated with the other account and downloaded a full copy of the latest version, rather than only a patch, but outwardly it did just as I said. (Come to think of it, when it comes to apps, as opposed to OS updates, do they ever download an incremental update, rather than a full copy of the newer version? If not, then insofar as they ever "update" apps, it did it for me with a different Apple ID than was used to install it originally.)