There is no need to be unfriendly virango D:
It's a fact that you can't change the amp cabs by a drop down menue or anything else. That's my message!
If I can change the amps and cabs at the profiler, why I can't change them in the editor. That's it!
I'm really sorry that my post appeared unfriendly to you, it surely wasn't meant so. The fact is you can change cabs and amps in editor, s. @DamianGreda's post above.