1 of 1 people found this helpful
For the first scenario, this is to be expected. Showing the average will not change the outcome when using a secondary source when there is an asterisk in the view. One option may be to put the TestStartDate field on the view--I assume most students who took the test multiple times didn't take it multiple times on the same day.
For the second scenario, this is a limitation of data blending. When showing a quick filter from the secondary source, it will not show the values.