There are a variety of different documents, so it would be helpful if you showed the differences you are concerned about.
I downloaded the docs for the 12/6 Deluxe and the 12 Sub from Speaker Hardware. These are from the GIFs of the crossovers.
View attachment 5127122
The 2nd order low pass is the same on both.
Upon further review it appears i was mistaken..looking at the 3015lf & 3012lf crossovers!! Thank you for he clarification.