There should be a functionality to see your history of downloads. I often will download the preview version so I can place the image in it's proper design before I can get sign off to purchase the image. This time I have 10 to buy and the current set up isn't built for this. I have to go back to the original photos and look up each one by its number. This isn't efficient at all! Maybe I am just blind? Does this function exist? If not, can this be added in the future? What if I needed 20+ images? That's a pain.
Simply put them in a library then you don't have to search for them again.