There are a few cases where an active course may have taken over the number of a retired course, giving us duplicate entries (this was more common before un-retiring a course was a thing). Specifically, AC 207 has both an active and a retired version in our data.
We should filter the retired courses out of the "SameAs" dropdown, as setting a retired course as the parent will essentially retire the child as well, and that's probably not what we want.
There are a few cases where an active course may have taken over the number of a retired course, giving us duplicate entries (this was more common before un-retiring a course was a thing). Specifically, AC 207 has both an active and a retired version in our data.
We should filter the retired courses out of the "SameAs" dropdown, as setting a retired course as the parent will essentially retire the child as well, and that's probably not what we want.