Yea the is a "Grandfather" thing here in SD. It basically says if you have every held an archery tag, you are eligible. It is the first timers and elk applicants that are manditory. This is what the Book says.

Bowhunter Education

Before a license will be issued, all archery big game licensees 12 through

15 years of age, all first time archery big game licensees regardless of age,

and all archery elk licensees must possess a National Bowhunter Education

Foundation certificate or certificate of completion from a bowhunter

education course approved by any state or provincial government.

Residents who have not completed an approved bowhunter education

course can still apply. If drawn, their license will be held until the

License Office is notified of the certificate number once a course has

been successfully completed.

Regardless of when the course is completed, payment for licenses

drawn must be made by the payment deadline.