Do I need to transfer my visa exemption stamp to my new passport for a border bounce?

A user recently acquired a new passport and is seeking clarification on whether they need to transfer their visa exemption stamp (already extended by 30 days) to the new passport for a border bounce. Immigration in Samui indicated that showing both passports would suffice, while their visa run agent suggested that the stamp must be transferred, especially since the specific border crossing at Khuan Don, Malaysia, does not allow for passport exchanges. Comments from other users indicate that both perspectives may be correct, with one advising that flying out is necessary to avoid complications.