Testing surrender table with CVBJ flashcards?

[khaaan]

Another question:

Then, under Hands, I selected "Mask" and a window titled "Basic Strategy" appeared up with tabs for six different situations. Under the Surrender tab in that window I clicked on every cell. The result was that all 100 cells in the Surrender tab were green, except for the three cells 16 vs 9/X/A, which were red.

Why wasn't 15 vs X red in that table? It is red in the Surrender table of the Composite Basic Strategy at https://www.qfit.com/Book/ModernBlackjackPage57.htm .