If i had source like unique & duplicate records like 1,1,2,3,3,4 then i want load unique records in one target like 2,4 and i want load duplicate records like 1,1,3,3

For Unique and Duplicate , we can go for same flow :

Source-->SrcQualifier-->Aggregator(group by this column and find count also)--> then use joiner (use 

the column from Source qualifier and join the data from Aggregator as source qualifier.col=aggregator.col) --> Router (insert into t1 for count>1 and for count=1 insert into t2). t1 is for duplicate records and it will cintain 1,1,3,3 and t2 will have 2,4.

Records in Source Q :

col 

1,1,2,3,3,4

The records after agregator will look like this :

col   count

1     2

2     1

3     2  

4     1

Records after Joiner : source q.col=aggregator.col

col count

1   2

1   2

2   1

3   2

3   2

4   1

These records will flow in router and we define two groups; one for count>1 (for duplicates record) and second for count=1 ( for unique record)