Change Data Region

Hi JannikT 

For your questions, you can refer to this official doc first: Large datasets in Power BI Premium. Here is a Note extracting from it: Once a large dataset is created in a workspace, it must stay in that region. You cannot reassign a workspace with a large dataset to a Premium capacity in another region.

What you want is the Multi-Geo feature. If Multi-Geo is enabled, you can move workspace to a premium capacity in other data regions from the home region. You can also create a large-storage format dataset in other data region. But it is not supported to move an existing large-storage format dataset to another data region. For more detailed descriptions and considerations, please refer to Configure Multi-Geo support for Power BI Premium 

• It is possible to create and maintain large-storage format datasets in remote regions to meet data residency requirements. However, note that you cannot move storage format datasets to another region. Moving large-storage format datasets from the region where they were created will result in reports failing to load the dataset. Move the large-storage dataset back to its original region to make it available. If you must move such a model, you must deploy it as if it was a new model, and then delete the old model from the undesired region.

Hope this helps. 

Best Regards,
Community Support Team _ Jing
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