okay,
@Nick *********
the way it works NOW is if you are using banked money method you need to show a years transaction history that is printed by the bank, (and this is especially so if you don't update your bank book every single month).
That's because you have to show the funds stayed in the account for 3 months AFTER you got your extension last year,
AND
you need to show that the balance never went below 400K baht the rest of the year
AND
then that it went back up to 800K baht two months before you applied for this current extension.
That's in addition to updating your bank book on the date you apply :O