Vt. Stat. Ann. tit. 32, § 4265

In case an abstract or grand list is invalid solely on account of the failure of the listers to lodge such abstract or grand list in the office of the town clerk within the time required by law or to return the appraisal within such time, they shall add a certificate thereto setting forth the date whereon the same was so lodged or returned. Thereupon such proceedings shall be had as are hereinbefore provided for legalizing abstracts, grand lists, or appraisals otherwise defective or invalid.