Complicated questions ahead.
My son's passport has been replaced, and a new one is in the mail. His Extension of stay (Based on being educated here) was issued here in Bangkok and it’s good through 2023. This extension of stay will need to be moved to his new passport once it arrives since his extension of stay was issued here in Bangkok (Changwattana). Is the only immigration office he can go to, to move the extension of stay is Changwattana here in Bangkok, Or could it be possible to do it in Koh Samui?
Secondly. I am due for my annual extension based on my son's ED Visa. But we have a trip planned to leave Bangkok for most of the summer. My stamp will expire while we are away, and I obviously need to extend it. Is it possible to extend my extension of stay with my son's new passport (that does not have a transferred stamp in it), and present the copies needed of both documents? This seems far-fetched to me, but I'm checking in to see if it's at all possible.