You will need to understand how your lost passport transfer visa. If you lost your passport then the documents are different when you transfer your visa. Firstly when you lose your passport in Thailand, you will have to report the lost passport to Thai police. They in turn will issue you with a police card with the case number on. When you go to your Embassy, they will require that you show them the police case number before you apply for a new passport. Keep a copy of that police case number. This is how to manage your lost passport and the transfer visa. This is for a retirement visa in Thailand as well as the Thai marriage visa which have been extended.
When you collect your new passport you will need to take this with you to immigration. You will need to take the new passport with you as well as a copy if you have one. For those who have an extended visa, normally you keep loads of copies of these things for your next visa renewal. You will need the following:
You will need to approach the passport replacement service counter, Division 2, Immigration Division 1 to submit an application. You will need to write down your name and surname, passport number and date of arrival in Thailand. If you don’t recall this then check your last 90 day online report as all the details will be in there for you to check.
Thai immigration will then check to see if the details are correct. Once they have checked the entry into Thailand, they will place the new stamp in the new passport to show your entry date into Thailand. This explains the process for the transfer visa to new passport in Thailand.