I’ve been deep-diving on tags, groups, replicas, duplicates and some of the subtleties about move/copy/drag etc. with replicas and tags.
One (minor) issue I’ve found is the “Move All Instances To Trash” command. The Inspector pane contains an “Instances” button that shows both the number of duplicates and replicants for an item. This would lead me to assume “Instance” means “duplicate or replicant”.
However, “Move All Instances to Trash” actually only ever moves replicants to the trash, it never moves duplicates. I think this is correct behavior, but I think the command should really be renamed “Move All Replicants To Trash” since this is what it really does (or, at least, what the docs say and my testing also shows).
Yes, its a minor point, but I was actually quite scared that it would trash duplicates as well (which is what the name suggests), which would not be good imho.