Just to add: I tried to put even hard break point in the transformations between SPO and Infocube and tried to debug but still debugger does not stop and looks like its not selecting the data from SPO itself.It gives the below message right away. FYI, SPO have tons of records.
Extraction from Sem. Part. Object ZXXXX : 0 Data Records (Full Load)
Regards,
Jeevan