Our User Profiles for Confluence cloud app is still in its early stage of development. A migration from the server or Data Center version of the app to the cloud is therefore not yet supported.
We are working on adding new features to the app. This will include those which can be considered as a prerequisite of a data migration. For further details regarding our plan and progress please refer to our public roadmap.
However, please be aware that because of technical constraints in the cloud environment and differing conceptual ideas for addressing some of the use cases, the migration will certainly have some limitations.
If you have further questions and want to get in touch with us, please Raise a support request!