I'm tinkering with the stock Civa 1.51. Is it possible to install two independent CDUs'. I made a window for the units. Both align and load waypoints correctly. When engaging the auto-pilot AB and heading switches it shuts both down and erases the waypoints. Is this a limitation or can something be changed to make it work?
Here is my window:

[Window0X]
Background_color=0,0,0
size_mm=360,328
window_size_ratio=1.000 
position=8
visible=0
ident=11041
type=special

gauge00=../civa/INS!Msu1,  0,70,180,68
gauge01=../civa/INS!Cdu1,  0,138,180,190
gauge02=../Civa/Ins!NavModeDual,  200,0,60,70
gauge03=../Civa/Ins!Msu2,  180,70,180,68
gauge04=../Civa/Ins!Cdu2,  180,138,180,190
gauge05=../Civa/Ins!UpdateFlags,  260,0,100,70
//dual ins bottom right