

Move (not copy) these to another folder (perhaps make one on the desktop) in case things go sideways, or (if you are confident), move them to the Trash right away.

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I may just add that they stopped after the macOS High Sierra upgrade in September of 2017.

I believe that I have worked out one of the best ways of going about such a task as I found myself having to do this frequently due to problems similar to those you are experiencing.
