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fisch According to https://ivanti.uservoice.com/forums/595681-user-workspace-manager-ideas/suggestions/18604945-import-group-policy-into-en… this feature will be available in the 2019.1 release, which is anticipated next March.
Professional Services does currently have a Powershell script that will migrate items found in Administrative Templates or custom registry settings, but it doesn't migrate everything, and the script is not publicly available or supported.