Hello everyone. Just sharing an experience from yesterday. I am currently staying on a SETV that I have extended for another 30 days till 10th June. I went to the Immigration office Korat to extend that another 60 days based on having a Thai child. There was a minor problem.
All my papers are correct but the additional 60days actually starts from the day you get the extension.
It IS NOT ADDED ON to your other visa.
The Immigration officer suggested I come back with only a few days to go on my current visa extension and then good for 60 more days.
Hopefully this can help others doing this for the first time.