Austin
How far away is the new address? Have you also moved the marker (the red thing on the map) to the new address as well?
The only address I have moved, was a mile away, so didn't have a problem. However, if it is far enough away, I wonder if you will need to re-validate the listing with either the postcard or phone number.
Is this the only listing you have added to your google places account for this business?
-Dan