How to avoid duplicated by placing surrogate_key in target table

Hi,

I have source table like this

Employee_ID,Position

1001,Marketing

1001,Sales

1002,Logistics

1002,Management

1003,Internal

1003,Assistant

1003,Assistant

and my target should be like this

S_key, Employee_ID,Position

1,1001,Marketing

2,1001,Sales

3,1002,Logistics

4,1002,Management

5,1003,Internal

6,1003,Assistant

I have develop my data flow with below transformation but i am getting source data as well as.

Source-->Query-->Table Comparsion-->Key_Generation-->Target

please suggest me how to avoid the duplicates using key_generation

Thanks

Murali