Drill Through looking at wrong data

Measures are not used as filters in drillthrough operations. When you add a measure to a drillthrough page you are really just saying that any visuals using this measure should show this page in the drillthrough menu.

So in your example the date filter and type filter will get passed to the drillthrough page, but the table will be using the active relationships. One simple fix for this would be to add the [Closed] measure to the table on the drillthrough page.