message: coarse to fine map bug fix for derefinement transform
diff: @@ -4435,6 +4435,10 @@ void CoarseFineTransformations::GetCoarseToFineMap(
  coarse_to_fine.GetJ()[i] = cf_j[i].two;
  }
  + if (fine_mesh.GetLastOperation() == Mesh::Operation::DEREFINE) {
  + return;
  + }
  +
  using internal::RefType;
  using std::map;
  using std::pair;
  