Hi Priya,
The new union budget tax rates are applicable from 01.04.2014 and so that old rates should be valid till 31.03.2014. This looks perfectly fine to me. I am probably not getting your concern.
My clients are waiting for an official circular from IT dept and hence I have not made the changes yet. But in case if you have any doubt, I can try in sandbox and confirm.
Regards
Ravi