It's been a very long time since I've created a collection and tried to prioritize it. I did this with the CSC, and it shows up as a Collection. However, I cannot get it to prioritize. I opened the Collections window and clicked on the Open drop-down box. I found the Collection and dragged it to the Prioritize window of the Libary but when I let go nothing happens. It doesn't show up in the list of prioritized books.
Am I wrong in remembering that this used to be possible? Am I doing it wrong? If so, how do you do it properly?