FYI I went to Chiang Mai immigration this morning to see if I could change from amnesty visa to non imm B for a job and was told it was NOT possible on amnesty visa.
I had all the right papers, forms pictures etc and went with my school representative.
The advice I was given was to wait for announcement. Just to save anyone a trip to immigration. 👌🏻
TLDR : Answer Summary
A user visiting Chiang Mai immigration was informed that it is not possible to change from an amnesty visa to a Non-Immigrant B visa. Despite having all required documentation, the immigration office advised them to wait for further announcements regarding amnesty visa holders. Several commenters supported this information and discussed their similar experiences, emphasizing that to convert an amnesty visa, one would need a valid entry stamp, which amnesty does not provide.