In 1Password8, there are two issues related to the use of "Duplicate Item".
Of those two, the second is more important. From a usability perspective, what I want is just to create a copy of the item in the same vault. I don't need to be interrupted in my process to answer yet-another-question about where it should go. If I want to move the item to a different vault, I can do that as a separate action. I've never, and I mean never, wanted to create a duplicate in a separate vault w/out first editing something about it, be that the username/password/urls/whatever. From a UX perspective, you are forcing me to think about things I don't need to worry about and interrupting my workflow.
Both of these items were, IMO, perfect in 1Password7. Please consider reverting that behavior.
1Password Version: 8.x
Extension Version: n/a
OS Version: MacOS 12.4