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sounds like a bug in the code to me, it should replicate the Name in URL segment instead. Are you on the latest version in case it's been patched?
Also FYI I was able to read your clients name even tho you've scribbled it out, you might want to block the whole thing off.
Select a page from under pages.
Then in the language gadget select "create" and then "Duplicate English Content"
When the page is duplicated to the new language the field "Name in URL" is not coppied from the previous language but gets the value of the "Name" field.
Result:
Is this the expected behavior?