An exchange between an existing borrower and lender of debt
instruments with substantially different terms shall be accounted for as
an extinguishment of the original financial liability and the recognition
of a new financial liability. Similarly, a substantial modification of the
terms of an existing financial liability or a part of it (whether or not
attributable to the financial difficulty of the debtor) shall be accounted
for as an extinguishment of the original financial liability and the
recognition of a new financial liability.