title: How is the product backlog in TFS filtering work items by default?
body: <p>When I go into the backlog (Epics) of a TFS project, it is showing a list of items/epics.  If I add an epic to that project, it does not show up in the list.  Is there a way to set the filtration/query criteria that the product backlog is showing by default?  </p>
  
  <p>I noticed that the "area path" that shows up in all of the epics when I open the backlog is the same (e.g. "A\B").  However, the area path I set for my epic that does not show up in the product backlog is sub-path (e.g. "A\B\C").  If I change my area path to "A\B", then it shows up in the product backlog.  So there must be something somewhere that is setting the criteria to only look at a specific area.  Where is that defined and how do I set the criteria so I can look at either everything in "A\B" and below or just items in "A\B\C"?</p>
  
  <p>By the way I am using: Microsoft Visual Studio Team Foundation Server Version 16.131.27701.1</p>