The following blog announcement states that you will no longer need to save a report to have a power point export reflect your filter changes. https://powerbi.microsoft.com/en-us/blog/export-to-powerpoint-is-now-generally-available-and-looking... However it still does not work. When will the be fixed? We end up with tons of reports in the list because people are required to save them just to export it with their filter settings.