California Code, Streets and Highways Code - SHC § 35549.1

When the reassessment is recorded, the original assessment shall be canceled by the street superintendent so far as it affects the particular assessments involved. New bonds shall not be issued until the original bonds are delivered up to the treasurer who shall cancel them. The lien of the reassessment shall hold its relative rank as to other special assessment liens as of the date of filing of the original assessment.