immigration hasn't changed any seasoning rules. Bangkok Bank have changed their rules in relation to the banked money, as in freezing that sum for an additional amount of time. Rumour has if that it is to prevent agents lodging the funds to 'meet' requirements then withdrawing it again
that happened to me aswell, showed as a required field. Left the site, returned and started again without touching any departure field and everything went through. And immigration actually asked to see the qr code
is correct though, why should they change the correct worded to suit those who have possibly dumbed it down for expats? I've recently got a Non B visa, and then got an extension of stay for a further 12 months. My lawyer messaged me to say i was granted my 12 month visa, even though its not a visa. My visa stamp has a big 'USED' stamped over it. That's it done and dusted. Only extension of stays from here on in
I'd say you can't extend something that has been invalidated by your departure. So you'll enter on a visa exempt stamp for 60 days, you can extend that once for an additional 30 days. If you want the long term visa again, you'll need to start the Non O process all over again.