What documents do I need to transfer my visa to a new passport in Thailand?

@Marie ******

Then you take both passports to the immigration office along with the letter that states you got a new passport and the immigration office will transfer your current entry stamp and any valid re-entry permits to your new passport. They will also note in it that you held an ED visa in your previous passport. Then you don't need the old passport anymore.

@Marie ******

IF you have a real multi-entry visa from a thai consulate in another country the immigration office won't transfer it. Instead you travel with BOTH the old and the new passport getting stamped in and out on the new passport until the visa in the old passport expires

@Steve ******

👍🏻 gotcha

Martin Howarth You wont need to travel with both passports because your original OA has expired, just transfer the extention of stay.

What about the original 0-A non visa , I know in my case it’s 4 years old now , so I guess that doesn’t matter anymore they only want to see the last yearly extension / entry. And when that needs renewed/ extended, again they not interested in the original visa ?

Plus my passport still has 4 months left on it , so I take both until it runs out ?