how to update to 8.6

hello everyone:

        I need your help !

         I have used  Xtreme Toolkit 2.0 in my project. Now I bought the  Xtreme Toolkit pro 8.6 and I want to update the Xtreme Toolkit 2.0 in my project to the new one--8.6.But the document is sample for me .For example ,i am told that the class CXTDockWindow and CXTCBarDialog have been repalced in 8.6,which i used in Xtreme Toolkit 2.0 in my project,but it dose not tell me how to update it in detail . If i do it myself ,it will take me too much time.

        So you can tell me how to update it.Maybe it is my wrong !

       Thank you !