Kippenhahn diagrams (see Fig. 3 for an explanation of the plot elements) of a PIE. Top panel: the |fPDCZ| = 0.016, |fCE| = 0.016 track experiences a partial remerging that occurs around model 23 800. Additionally, one can see the dredge-up-like event that happens when the upper part of the split PDCZ descends into the region below the split point. Bottom panel: the |fPDCZ| = 0.016, |fCE| = 0.016 track without the geometrical cut-off to the overshoot experiences a permanent remerging.