Records created in electronic format and designated on the disposition schedule under RSA 33-A:3-a to be retained for more than 10 years shall be transferred to paper, microfilm, or both. Electronically-created records designated on the disposition schedule to be retained for less than 10 years may be retained solely electronically if so approved by the record committee of the municipality responsible for the records. The municipality is responsible for assuring the accessibility of the records for the mandated period.