This is what shows up under Actions for a single collection...the option to remove duplicates is there, but it will only move the duplicates within the one collection. This is no good for what I need to do...it needs to look at all cards.
A solution I found is after clicking on the "move duplicates" link in the single collection, remove the collection number from the url and it will look at the ENTIRE collection, just like it used to do. I don't know why I don't have all those links, but I'm good with this. Thanks for your information and help.