title: does Power BI gateway data source ignore credentials used to create dataset?
body: <p>I have a Power BI workbook that I have created in Desktop.  It sources from a SQL Server database.  I can access this database with account x.  My Azure tenant admin has created a data source for this database in our gateway (within the Power BI service), and I have access to this gateway.  The admin supplied account y in connecting to this data source.  How does this work when I go to refresh the dataset that this workbook creates when I publish it to the service?  That is, when I schedule a refresh on the dataset, will it dial into the SQL Server database using account y provided in the data source definition (virtually ignoring / dropping account x's credentials)?</p>