There is a shooting bulletin on the Portal from last Feb that explains the name change etc. This would also have been cascaded to all Shooting Officers as well (for onward cascade)
Misinformation - it has to be revalidated annually. You do not have to repeat the course.
Historically the course could be either a qualification or an authorisation. The issue was for it to be a qualification there needs to be a representative from the SASC present to rubber stamp it. Where a SASC member is not available it has to be an authorisation and is valid for 12 months. It is revalidated with the authority of the CO (commandant in the ACF), assuming you have used the qualification enough in the previous 12 months to stay current. I’m not sure if any courses are “qualifications” these days. Fortunately, mine was!
Don’t know what that it’s, don’t most courses just move over to the cadet version? So if you have SA(B)90 it just becomes SA(SR)07? Sure that’s in Ground Training Ranges somewhere.