this is way the wizard works, and this is the "logic" of cuelux, in fact you make the chase on the dimmer, and this way, your chase is not closed to only one color it will just depend of the color you color cuelist will send!
The additional system is very usefull!
But now if you only want your whase in red for example, you, first make a chase with the wizard, then you make a cuelist with one red step, and you put the 2 cuelist you just created in one sted of a stacklist, this way when you will start the stacklist, you will have a red chase!