I am using Raw: SpecialFX. They save just fine if I'm creating a cue stack from scratch, but modifying a cue stack using store merge or store new cue results in nothing changing for me.
Here are the exact steps I am taking:
Select my fixture group : LSG
Select Control
Change the value to what I want
Store
Exec 7 cue 8 please
clear
Play the cue, still has old values.