Hi,
I recently updated to Anthology XII. And I had both mk1 and mk2 H3000 Factory licenses.
I noticed my mk1 license is still valid!
However, the same thing can’t be said about my mk1 and mk2 Physion licences. The Physion mk1 licence does not work anymore, which is not a big deal.
But it seems there are some different rules for different plugins.