CrazyTalk 7 is used to animate 2D talking heads, basically photos or drawings of a face. You cannot import iClone characters into it. Furthermore, the facial animation scripts it produces are not compatible with iClone.
As theschemer pointed out, the .cts scripts from CT6 are compatible. However, there is not really a need for that as the underlying speech recognition engine is the same in iClone and CrazyTalk 6.