What should be done if an emissions sticker becomes damaged?

In the context of emissions compliance and testing, if an emissions sticker becomes damaged, the correct procedure is to void the sticker and keep a copy of the report. This action ensures that there is a clear record of the damaged sticker and helps maintain the integrity of emissions recordkeeping. Voiding the sticker prevents any potential misuse or confusion regarding the emissions status of the vehicle. Maintaining a copy of the report serves as a documentation measure, which aids in tracking compliance and can be essential for regulatory purposes.

The other options are less appropriate because reusing a damaged sticker does not maintain the required standards of compliance and could lead to issues concerning the integrity of emissions testing records. Additionally, issuing a new sticker without voiding the damaged one contravenes proper procedure, as this could result in multiple stickers being in circulation for the same vehicle, creating confusion. Simply documenting the damage while continuing to test does not address the fundamental issue of record accuracy and responsible management of emissions documentation.