Not persisting current form data when click the execute button.

In my form having two execute buttons for filling two different tables.

Step1:

     Click on execute button 1

     Two rows filled by return value from execute button 1

     Click on execure button 2

     return  message like "No Fail Found" since no record returned

See the screen shot below:

Step2:

     After updated some back-end data

     Click on execute button 1

     return Message like "No Error Found" since no record return

See the screen shot below:

Step3:

     After click on execute button1, Click on execute button 2  immediatly

     return message like "No Fail Found" since no record return

Here, the problem is table 1 data not persisting. it automotaily modified like below the screen shot

These fields having data binding with xml schema. Can you please let me know how to resolve the problem ?