Question on InfoCube / ODS

Hi,

I have a small ABAP routine in the Start Routine of the update rule in my ODS/InfoCube.

I have modified this routine to include a change in requirement.

Do I need to re-initialize the ODS for:-

1.) The change to get affected to all my previous data ?

2.) For the change to be felt from this point forward ?

Regards,

Dominic