Hi,
I tested the Copy-UserInternationalSettingsToSystem cmdlet on Windows 10 and Windows Server 2016 and found it was not exported from the module International on either of them. Please send feedback with the Feedback Hub app
https://support.microsoft.com/en-us/windows/send-feedback-to-microsoft-with-the-feedback-hub-app-f59187f8-8739-22d6-ba93-f66612949332
Best Regards,
Ian Xue
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