Hi Prashanti,
please check 1st if the new modules really have 0.5 credits assigned to and not 1, if you are not sure. You can do it in PIQ_ACSTRUC. Navigate to the SM and click display. You will find the credits in one of the tabs.
I initially thought you calculate the GPA/CGPA by showing the resp. Perfomance Index in the "Academic Work" screen from the student file.
But if you really have no entries in V_T7PIQSI2_INXCP this seems to be not the case.
So you have to tell us the procedure how you calculate the GPA/CGPA. Do you use a customer report for this or the degree audit or a form (you mentioned a transcript)?
Dirk