Map mod & pitch wheel to ctrl. 4 & 11 greyed out!

I've been trying to edit my Orchestral Template in LP9 using the GB Jam Pack Orchstral instruments and other libraries. When I try to edit some of the other EXS instruments to respond to the mod and pitch wheel like the GB Orch instruments, the "Map Mod & Pitch Wheel to Ctrl. 4 & 11" is greyed out and I can't change it. Also, in the EXS editor the GB instruments won't allow me to "uncheck" this feature. (I did this in my problem solving experiments)

I created this orchestral template with all EXS instruments and would like it if all of the brass, woodwinds, and strings responded the way that the GB Orch instruments respond for crescendo, decrescendo, and articulations. Thanks for any ideas about what's going on!