Compare two groups and look for files which *aren't* duplicated between them?

Hi guys. I’m doing some cleanup and I have two groups, each with around 1000 files. I’d estimate about 80% of the files in group A exist in group B. I want to merge these groups…only keeping one copy of each file. I assume there’s a way to use a smart group to show files which only exist in one group or the other, but I’m not sure exactly how to do this.

Can anyone point me in the right direction?


You could set up a smart group searching only in the second group (see Search In popup) and using the condition Item is not duplicated. Then you could move the smart group results to the first group.

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