Gregory! My guess is that your drawings were created properly, it’s just that there isn’t any geometry showing in the viewport. You will need to drag them into your presentation, then stretch the viewports to find your drawings.
One way to avoid this is to go to a heavy plan viewport, then zoom extents, then update all of your other plan scenes to have the same camera view. This way they will very obviously show up in your scrapbooks. Be careful that you don’t update the RCP’s since they have a bottom up view.
Let me know if this gets you on the right track!