[W4RH4WK55]

Windows should just prompt for confirmation if the file differs. A reg key should allow a user to disable the confirmation.

[CrendKing]

Windows 7 does have a delete confirmation for Undo Copy. However, either Windows 8 or 10 removed that confirmation. More reason why people missed Windows 7.

[wolpoli]

You are right. I didn't get the delete confirmation for Undo Copy on Windows 11, even though I had "Display delete confirmation dialog" checked.