If bonds issued under or upon the security of the original assessment, no reassessment made pursuant to this chapter shall change the security or lien of any such bond in any manner whatsoever or the method of the enforcement thereof. The lien of such reassessment shall hold its relative rank as to other special assessment liens as of the date of filing of the original assessment. Upon confirming the reassessment, the city shall transfer into the bond and assessment redemption fund the amounts so apportioned among the several assessments.