If a certified copy of a decree for partition and of the return of the commissioners is presented for registration, and if a mortgage or lease affecting a specific portion or an undivided share of the premises had previously been registered, the tenant claiming under the mortgagor or lessor shall cause the mortgage or lease to be again presented for registration, and the assistant recorder shall endorse thereon a memorandum of such partition and a description of the land set off in severalty on which such mortgage or lease remains in force.
Massachusetts Legal Code