Change details of PowerBI Service Live Connection to a different workspace and model

We have power users creating organizationally supported models (e.g. certified or promoted) that are also creating preview models with nearly identical tables, columns, and measures. The preview models usually just introduce additional measures for testing or a way to validate new DAX logic for existing measures. It would be helpful if we could redirect our Live PowerBI Service connection from the public preview models to the certified models (or from certified to preview).

Although moving from a richer model (in this case a preview) to a more sparse model (certified) might cause some visuals to break, we are willing to resolve those conflicts at design time. Moving from certified to preview should be easier if we do not introduce breaking changes to table, column, or measure names.