upgrade for Farang
VERY, VERY rarely has this happened. Usually it is some kind of "under the table deal", where there is a payoff.
New CAAT discourages it and will attempt to block it.
Years past, you just left Thailand for six months and came back as PIC.
But most of all is CAAT rule #1......you are low life, scum sucking, farang expat.
And even more important, ELVIS doesn't like it.