As you can see in the closeup of the rectangle, it is not entirely covered with dots. So, I am unable to push it out through the double walls.
Using the Tape tool, every corner of the rectangle has the same coordinate along the red axis which is identical to the coordinates of the outer edge of the larger rectangle.
Until you understand the difference between loose geometry - faces/edges, also called raw geometry, and groups/components, you will keep running into problems like this.
click on the photo to see the video
A more lengthy explanation, with more details (click to see the video)
bmike,
Thank you so much. I double clicked on the first layer, added my guidelines & lines & removed the hole perfectly.
Then I hid the first layer & double clicked the second layer. This was a bit trickier because I had to adjust for the differences in elevation of the 2 layers.