Right click data source AW and click Set Up Incremental Load
Click Add button to add an incremental load setup rule
In the "Add Incremental Load Setup Rule" box select option "Equals (ignore case)" in the Table selection list and type SalesOrderDetail in the box next to.
Choose same option for Column and type modifieddate in the box next to.
Select Additional Action "Handle primary key updates" and click OK
Click Refresh next to the box "Rules will be applied on these tables:" to verify, that the new rule has been added