Issue connecting SPSS Modeler 18.3 & 18.4 to DB2WoC Databases - Null values rendered as the value in the previous record

Question

I am having an issue connecting SPSS Modeler 18.3 & 18.4 to DB2WoC Databases - Null values rendered as the value in the previous record.

  For instance record 1 contains the values - 1,2012-12-12,<null>,"Strength"
               record 2 contains the values - 2,<null>,17,"Bluebell"
               record 3 contains the values - <null>,<null>,<null>,<null>

 These are being rendered as :
record 1  - 1,2012-12-12,<null>,"Strength"
record 2  - 2,2012-12-12,17,"Bluebell"
record 3  - 2,2012-12-12,17,"Bluebell"


Any ideas how to solve this?


Expected results were: 
record 1  - 1,2012-12-12,<null>,"Strength"
record 2  - 2,<null>,17,"Bluebell"
record 3  - <null>,<null>,<null>,<null>