ATEM 2 M/E keys split and not shared?

I just got a new Atem 2 M/E switcher and all is looking good but I'm surprised to find the 4 upstream keyers are split 2 and 2 between the M/Es.

This really puts a dent in the way I was hoping to run the board as 4 keys shared by both M/E is so much more flexible and easier to use.

Am I missing an option or an update somewhere? Why are the 4 keys split rather then shared?

I was surprised to find that as well. Sucks.