Biblia KJV is unavailable in Logos?

What edition of the KJV is the Biblia KJV, which has the support info:

The only ones available within Logos itself, and apparently in the store, are the "KJV1900" and "AV1873".

This is unavailable for Logos, why is that?

I found this out when looking up Matthew 13:21 where the Biblia KJV, for the word "offended", has a footnote ("offended: he relapseth, or, falleth into sin"); and the Logos KJV editions do not have this footnote.