I’m picking up a new passport in Bangkok - my current UK one is damaged. I’m here on 30 days visa exemption and have extended 30 days. I’m flying out from Bangkok a few days after I pick the passport up because the 60 days ends. I’m wondering if I need to go to immigration to have my entry and extension stamps added to the new passport or whether it will be ok to just show both passports when I’m leaving? Thanks.
TLDR : Answer Summary
If you have received a new passport while in Thailand and are concerned about your entry and extension stamps, you can simply show both your old damaged passport and the new one when you leave the country. Immigration will stamp you out on the new passport and make a notation regarding your entry on the old one, so there’s no need to visit immigration to transfer the stamps.