1. If the report generator option Remove Stray Objects is unchecked. This option deletes unused/orphan objects from the report.

2. The routine removing stray objects needs to be improved to detect cases of cicrular linking.  For instance, a picture may have a place, and a place may include that picture.  In this case, both objects are considered "in use" although both the source and the picture have no real references anywhere.

As a temporary solution, you are welcome to use the Table Layout and delete the places you don't want.  Just right-click with the mouse and select "Delete Place" to delete the selected place.