What must be saved for the inspection station supervisor when a replacement sticker is issued?

When a replacement sticker is issued during an auto inspection, it is essential to save the old sticker for the inspection station supervisor. This is crucial because the old sticker contains information that helps verify the history of the vehicle's inspections and any potential violations or issues that may have arisen during the previous inspection cycle. Maintaining accurate records, including the old sticker, is necessary for compliance with state inspection regulations, ensuring transparency and accountability in the inspection process. Proper documentation, including the old sticker, also assists in preventing fraudulent activities and ensures that all replacements are justified, protecting both the inspection station and vehicle owners.