I have imported a batch file into AEP and I see the data is part of the union schema - Profile. However when I try to view the data from the View Union Schema vantage point there is nothing there. And when I try to use the data in an audience definition it says that there is no data. But when I view the dataset, I can see the data. What is the issue? Why can't I see the data in the union schema, and why is Audiences saying that there is no data?