I assume MSP13 is similar yo MSP10, but havent used it os this may be a little off.

If you og to your filters, use the dropdown, click on "more filters". Select the filter you created (click on it) and from the right choose "edit". There should (again, this is in 2010) be a tickbox bottom right that says "show related summary rows". Untick it and save, that should do it.