start date of basic pay IT008 for the first pay roll run

Hi Gurus,

We are going to run our first payroll from 01.04.2011. Here my question is, is it required to change the start date of Basic Pay (IT008) to 01.04.2011. Or I can maintain the the history as such ie. the last pay change was on 01.04.2010.

Thanks in advance for your support.

Regards,

Rethi