MIRE events trigger the flood rules; MIRE is an acronym for make, increase, renew or extend. If you accomplish the accommodation using a new note, you are MAKING a new loan. If you extend the maturity date you are EXTENDING the loan. If you increase the loan balance you are INCREASING the loan. If you modify a loan without extending the loan term, without using a new note (which would be considered making a loan), without increasing the balance, and the loan isn’t being renewed, then it seems you have modified the loan in a way that would not trigger the flood requirements.