Name of Responsible when reviewing interviews as HQ

When I log in as HQ, and go to Interviews to review questionnaires, if I filter on ApprovedBySupervisor, I expected to see the name of the supervisors in the Responsible field, but it is displaying the names of the interviewers instead. This is a change from the past. Is there a reason it is doing this? It makes it more difficult to manage and understand the process flow.