Claiming homebuyer tax credit: obtaining “signed” Final Settlement Statement

In Washington State, signed final Settlement Statements (HUD-1 Form)  are not traditionally done.    Estimated Settlement Statements are signed at escrow just prior to closing your purchase transaction.  The Final Settlement Statements are mailed to parties after the transaction has closed.
After talking with a CPA, they reported that the IRS has generally accepted a non-signed FINAL [...]