NIA Section 86

If the holder of a bill of exchange acquiesces in a qualified acceptance, or one limited to part of the sum mentioned in the bill, or which substitutes a different place or time for payment, or which, where the drawees are not partners, is not signed by all the drawees, all previous parties whose consent is not obtained to such acceptance are discharged as against the holder and those claiming under him, unless on notice given by the holder they assent to such acceptance.