From what I saw using mine last night..... It looks like you create your IA's (as you did) to switch between the scenes. So, if your preset is scene 1 and you only made a IA for scene 2 on that preset then you cannot use the same IA scene 2 to toggle between scene 1 and scene 2.
In your situation....you would have to hit the reveal and go back to the actual preset number.
Or, as an alternative change the scenes functions to use the (incr-decr) and you could have that flip between scenes that you have (you can flip between 1 and 2 like you want). Only thing I think...is it will flip between all 8 scenes even if you don't have them fine tuned (which also means that they have all blocks engaged as default)
Hope this helps.... I am still playing around with it myself. So, not sure if there may be other alternatives as well.