I follow exactly the sample (.sln) provide by Microsoft .
I create workspace, uploaded pbix file, update database connection string and display it in a MVC web.
Is works fine when the file I upload is new.
If I upload a file that I was previously published in Power Bi Service, it fails and show a warning "can't load data for this visual".
Both reports uses the same connection, database and tables.
Must I recreate the files or there is any work around?