This has come up a few times in discussion, but I think it needs highlighting. In DT3, changing. moving, deleting items in an indexed folder makes the change in the Finder.
I’ve just spent a happy hour or two rebuilding a Finder folder having forgotten his important point (my fault entirely).
In DT2, the integration went only from Finder to DT, so you couldn’t do what I just did.
So folks - be careful.