Duplicated ebooks in Digital Edition for iPad

I ran into a problem after loading a few ebooks in Digital Edition for iPad. With a few uploaded without a problem, one particular file was large and the program crashed before the book appeared in the app. It took several attempts to get it successfully uploaded but once I did, there were duplicate images. When I deleted one copy, both copies were gone. So, I repeated everything and ended up with the same problem.  I reinstalled Adobe Digital Edition twice and only had to upload the ebooks once. Even so, I ended up with two images of the same books that were duplicated during the previous installations.

This is puzzling and really annoying. To manage my view, I use favorites which is the only way to see a single copy of all the books. Has anyone had this problem and can anyone suggest a solution?

iPad ll

IOS version 9.35 (13G36)

Digital Edition version 4.5.2.152305