from Eagle Has Landed
FinCEN FORM 104 specifically states "Currency Exchange" at Part II number 33 of the form. Also look on page four of the form at Item 33 and you will see "Currency Exchange"
Here is the FinCEN site which shows the correct form the bank will use to report the transaction will be FinCEN Form 104.
Peace, Eagle Has Landed
*** Please refer to the advice of a professional as to which Form(s) you should sign when exchanging IQD or VND for USD.