I appreciate the feedback. I have tried to follow some of the suggestions, but the problem that I see is as follows. When I select any object in the drawing, every item on the drawing is highlighted. If I open the Properties box, each item is shown on Layer 0. Also, under the Format tab, explode is not an available option. It is grayed out and not usable. Perhaps I am not describing things correctly. In my limited experience, I usually take a drawing, select objects one at a time that I don't want to show on my as-built and hide the layers. Then I go through and label the symbols that pertain to my work. For this drawing, I have no way of separating the unwanted symbols from the wanted symbols. They are all linked together.