What's the Bonus ID please?
I don't have that account open anymore to be able to view it, but i do remember that it started with a 62-- and it had 4 numbers.
BTW, why do you need it? after closing an account you'll probably not have success cAlling up and saying: "I was promised 15,000 points under this bonus ID"
, but with Amex you could never know.
might work very well.