With ShareBuilder Pricing, you will be able to toggle through all available rate card quarters.
Under your station's call letters, you will see 'Time Period'. You will be able to choose any available quarter to export rate cards from there. Only the latest export of your rates for that quarter will be accessible. You will also see what date those rates were created.
A rate card quarter will become available once you and your Consultant review financials, your Analyst examines your price plan, and your Analyst exports your rates to the web.