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

I want to +1 this particular need as well. I am migrating my family from another password manager and because of multiple devices over a prolonged time period we ended up doing multiple imports which led to 100's of duplications. I really don't want to have to go back through all of our password to manually identify the pure duplicates, so even something quick and dirty (but trustworthy) to find exact matches would save me likely hours of work.