Freezing HIstorical Mapping

Hi trathman 

Power BI retrieves data from the sourceand any updates made to the source will be reflected in the model after a successful refresh. However, if there are changes to dimension attributes that need to be retained over time, these changes must be tracked and stored. This requires maintaining historical records, including when each change occurred and when it ended. Without such tracking, a refresh would overwrite previous values, making it impossible to analyze historical trends or compare past states of the data.