Do I need to transfer my DTV visa to my new passport in Thailand?

If you have renewed your expired passport while in Thailand and hold a DTV visa in your old passport, you cannot transfer the visa to the new passport. Instead, you should bring both passports when entering Thailand. Local immigration can transfer your entry stamp and provide an additional stamp with the DTV details, allowing you to travel with both passports. Some users suggest carrying the old visa page in the new passport, while others confirm the requirement of presenting both passports during your stay.