Transfer of existing visum with EOS from an old to a new passport.
Easy peasy.
1.) Get your new passport 😉
2.) Copy ALL pages of your old passport.
3.) Copy picture page of your new passport.
4.) Fill out ½ an A4 from immigration.
5.) Go with all of the above to immigration within 1 minute.
6 ) About ½ an hour later, I had my stamp in my new passport. It is actually FOR FREE. In my case even with a new 90 day limit.
7.) TM30 notification: I did a new one online but the officer said that it is not necessary, the old printout would be OK.
Go eat a celebration noodle soup for 40 THB, and think about how old you will be in 10 years when you will have to do it again.
NB. Immigration Korat today.