Mac Appstore and Sandbox

[Rip]

I'm running my iMac with a Sandox that includes my applications.

The Mac Appstore, however, continues to report that I have updates to install, even though the Sandbox applications are up to date.

I'm guessing that, for some reason, the Appstore is looking at my Mac HD drive instead of the sandbox drive.

Is this a SD! issue, Appstore issue or a problem with the way I'm using my Sandbox?