Tool for detecting and removing duplicates? [Available in 8.10.18]

I also miss the previous 'find duplicate' tool in V7. After finally upgrading after figuring out I had to first import my standalone vault syncing with dropbox (AB: you need to make this requirement MORE prominent on your website!), I had several dups, sometimes 3 copies for each item. Funny thing was, some of the dups did not have the attachments that were included in the item. I finally manually cleaned out dups (down to around 700 items), and in some cases had to reattach files that landed in the "Salvage" vault. I think I've got things under control, but the upgrade was not smooth. So back to the original point: Is the loss of finding dups due to the switch to Electron?