Connect to OBIEE RPD using ODBC Connection

Was there ever a resolution for this (I'm experiencing the same issue).  A bit of history: 

• Been working with Oracle OBIEE for about 8 years and are looking at additional/alternative reporting tools but don't want to give up all of the Business Models that we have created in OBIEE
• Testing Tableau and Microsfot Power BI Desktop as alternatives that could then translate to long term solutions
• Setup a OBIEE ODBC connection that connects to OBIEE and dislays a list of Presentation Layer Subject Areas
• Setup a data source in Tableau which then brings up a sujbect area (dsignated) with a list of all of the tables and data objects within the subject area, which I can select into a report (Tableau workins using the ODBC connection)
• In Power BI I select Get Data and then select Other and then ODBC as my data source.  I select the same ODBC connection for Power BI that I did for Tableau.  It brings up a list of the OBIEE Subject areas but when I click to expand the list to get to the table and data elements no items are displayed.  I would have expect a list of subject area tables and then subject area columns (data elements) to be selected to be displayed. 

I would include screen shots but they would be indentical to other screen shots in the discussion forum.   Please advise how and if there is a solution for this issue.  Because we have 8 years of OBIEE data modeling it is important for us to find a way to leverage those models going forward.  We would also consider a tool that could migrate those data models, the Oracle RPD, to Power BI.

Thanks...