DigitalVolcano Software Support

I'm trying to compare two directories (including their subdirs). I want to know if files in directory A also reside in directory B.

I DON'T want to know if files in B also reside elsewhere in B but not in A. But that looks like the default operation of Duplicate Cleaner.

How do I make sure that the only duplicates are found across the two paths and not within one of the paths?

Select by Master path in the selection assistant might help you here - it will select the files in path A which are duplicated in path B

Great! Thanks. I'll try that.