Conn. Agencies Regs. § 19a-41-6
If a vital record is electronically filed, amendments and corrections shall be completed through methods incorporated into the electronic vital records system. If the original source of the vital record is in a paper format, the local registrar shall insert the information that was left incomplete, or in the case of inaccurate information, type a single line through the data that is to be changed. The added or modified information shall be typed onto the certificate in the box designated for such information. If a document is bound, the changes shall be legibly printed in black ink. In the alternative, a vital record in paper format may be corrected or amended by converting the certificate to an electronic format, if such electronic format is available. For all corrections, as defined in section 7-36 of the Connecticut General Statutes, the date of the correction and a summary description of the evidence submitted in support of the correction shall be maintained as part of the record. For all amendments, as defined in section 7-36 of the Connecticut General Statutes, excluding amendments related to parentage, gender change or cause of death, the word "Amended" shall be recorded on the face of the certificate along with the item category, the information that was changed, the date of the amendment, and a description of the documentation provided to support the amendment. The documentation provided to support the amendment or the correction shall be maintained in an evidence file.
Conn. Agencies Regs. § 19a-41-6