What happens to visa and extension information when transferring to a new passport in Thailand?

Here's a more convoluted example

They entered Oct 17, 2014 on a 30 day visa exempt stamp in BKK, (ผ.30) <- the middle left stamp,

under it in thai it says ต่อ30วัน, extended 30 days,

then they got a 90 day Non-O in CM on the 9th of Dec 2014<- the middle right stamp, good until 7th March 2015

under it in thai it says เปลียน ทรค RT <- changed to retirement

below that was the most recent departure stamp <- bottom left 13 Feb 2019, and their most recent arrival 15 Oct 1018 good until 7 March 2019

What I'm getting at is the visa type, the date you entered on it, when you exited last when you entered last is all moved to the new passport.

One more useless tidbit 😮 looking at a whole yearly extension stamp neither you nor an immigation officer can tell you if a retirement extension is from an OA or from an O visa.

They have to look at either the visa in your passport, your entry stamp OR the front page of your passport if you got a new one to tell

you can clearly see where it says I entered on a Non-O visa

@Dirk *******

, they will put a copy of your entry stamp.

Which will say "Visa class Non-OA".