Data Sinks with Excel

Hi,
I have a flow for the web services which is as follows:

Data Source
Test request 1
Data Sink 1
Test request 2
Data Sink 2
Data Loop

While all the test requests use the same Data Source(which is in EXCEL), they write to different Data Sinks(which are in EXCEL again).
I have values from the response which I am capturing as properties and writing them to the Data Sinks.

When I run the whole test case with the Data Loop(say for 2 rows in my Data Source), the corresponding properties(captured in the Test Response 1) are written to Data Sink 1(2 rows are populated) but properties(captured in the Test Response 2) are not written to Data Sink 2(EXCEL sheet is empty).

Please advise.

Thanks.
Srikanth.