Since the change to the new style approval maps has anyone been successful in implementing the Parent Work Group link from the company tree to have subsequent approvals in a multi step approval move up the company tree

Previously I could assign the workgroup in this manner similar to what is done on the rules section  when Employee from Document is selected. However, it does not allow me to place the equation for Parent Workgroup in the workgroup field and has no setting for OwnerID of the ParentWG

((Approval.ApprovedByID.WorkgroupID.ParentWGID))  is an option but 

((Approval.ApprovedByID.WorkgroupID.ParentWGID.OwnerID)) is not and seems to fail to populate the Employee field.

Likewise copying this to the workgroup field throws an error that OwnerId can’t be empty and populating both OwnerID and the Workgroup with an equation results in the Workgroup being deleted upon save.