Hello. We are American citizens. We arrived and received a 60 day visa exempt entry. We had to renew our passports by mail at the us embassy in Bangkok, they were full. We received our new passports a few days ago, our old ones have been cancelled. We have the form to transfer the stamp into the new passport and the copies we need from both passports. We plan on leaving by train to Padang Besar next month. We went to Jomtien immigration today to get the stamps transferred and they told us they will do it at the border. This doesn't sound right. The old passports are cancelled, meaning we do not currently have a valid entry stamp. The border is a long way from everywhere if we go there and they won't move the stamp. Any advise?