It seems to work, but I don't think this is quite useful for the manuscript

src/modules/init/moduleInput.f90

@@ -1367,6 +1367,8 @@ MODULE moduleInput
               ! If the boundary for the species is linked to the one analysing, add the edges
               if (associated(physicalSurfaces(ps)%EM, bound)) then
                 bound%nodes = [bound%nodes, physicalSurfaces(ps)%nodes]
+
+                bound%edges = [bound%edges, physicalSurfaces(ps)%edges]
               end if
 
             end do