Overwrite existing Report and Dataset without re-sharing.

Anonymous I just tried again by downloading the pbix file from our power BI portal, making my changes, and clicking publish. It did NOT succeed in overwriting my old report, and instead just created a new one with the same exact name. So now I have two reports that differ, with the same name. 

Update 2/4: I think I've figured it out. I was not able to overwrite my old report by downloading the pbix from the Reports tab in my Workspace, but I was able to when downloading the pbix from the Datasets tab instead. This might be due to renaming the report from my Power BI Service in the past, so when downloading the pbix file from that tab, it attempts to publish a new dataset with the new name.

I think this should be made easier or more obvious. I'd suggest a publish menu like Tableau's, where you can specify the name/location of the report and it prompts you to overwrite before publishing.