Taking over a data model connected to a dataflow fails the refresh through an authentication issue

Because POwerBI was designed for a single user to do everything.

Working as a team in PowerBI is a nightmare of trouble.

It's been that way for a long time, so I suspect some deep undelying structure issues that cause this.

The best solution we have found is to create a single user account and doo all the work under that account.

Of course that creates a tracking and security nightmare, but it allows production reporting to continue without the regular firedrills required if anything is "Taken over".

They should warn you that taking over a dataset will potentially create hours of troubleshooting and work and should never be done in a production environment.