Alain22 The thing is, program does not know which of the many copies of the file is duplicate and which is original, you have to chose which one to keep. The content of the “Duplicates” album depends on the button you press in Delete duplicates dialog, which is a bit confusing, I know. We have plans to redesign this dialog, work is in progress. Right now if there is button “Delete All”, then pressing “To Album” will only list files that would be deleted by that other button. However, if there are no “Delete all” button, it would list all available copies. Hope that makes sense.