BW data not appearing when opening saved file

Before I open a ticket I want to throw this out to see if anyone else has seen this.

I am able to create/edit/refresh etc data from BW in 1.28..no problem.

If I save, close Lumira, and open the saved file back up, I get blank visualization and data columns in Prepare. everytime.

If I hit refresh, it all comes down from BW with no problem... save, close, open back up..its gone.

thanks

james