This may actually benefit not only iOS but any one who has YacReader in their device.
From time to time I need to move my folders where my comics are stored, particular when I replace hard drives on my NAS setup. When I do I save the library folder and do a reimport. However when I then do an import on my iPad of import unread, it imports comics I’ve previously read, and I have to go through and individually remove them.
I would like an option within the app to show duplicates and do bulk removals.