DS4.2 SP02 issue

Hi guys

i successfully installed data services sp02 on windows server 2012 but when the jobs got migrated from data services 4.2 SP01 then under the validation
-> Displayed optimized SQL.. Dataflow tab1 joined to tab2 with query as transform and query is inserting data in target table.. nothing fancy going on in dataflow...

DS4.2 SP02

SELECT "TAB1"."ID" , "TAB1"."CODE" FROM "DBO"."TAB1" "TAB1" WHERE ( AIVariable_1 = "TAB1"."ID" )

DS4.2 SP01

SELECT "TAB1"."ID" , "TAB1"."CODE" FROM "DBO"."TAB1" "TAB1"

could you please help me to understand why where condition added in SP02 version.. i am assuming becasue of that where condition my job is not finishing... on SP02 job is keep running from last 1 hr.. but in SP01 it finishes within 2 minutes.

regards