|In the past there was a door here (red circle).|
The yellow building previously had two housing occupancies and two addresses. Now, the yellow building has only one occupancy and one address. The address which represented the occupancy where the door was has now been given a status of 'RETIRE' in the MAR. If one looks really closely at the image (click on it) then one can see the outline of where the door had been. Notice that the neighboring buildings both have two doors and the same placement of windows on the second floor.
Just like our dynamic city, our addresses are also dynamic!