We have a $120,000 HELOC that matured. The payoff is $124,000 which includes unpaid accrued interest of $4000.
A Loss Share agreement allows us to do a fixed rate amortizing loan for the 120,000 principal amount.

Lender wants to add forbearance agreement to the end of the new mortgage note showing that the $4000 will be payable after the $120,000 note is paid in full.
The $4000 will not accrue interest it is just deferred until the loan pays off.

Is there a problem adding this language to the note or should the agreement be documented elsewhere?