How to remove OTL timecard zero timecards using continue button?

Hi ,

I have a requirement in OTL. Default time card has entries with zero hours.User will enter time for few records and save the time card.After Save,User will click on continue button to go to review page.My requirement is after click on Continue Button zero timecards should be deleted and review page layout should show only non zero timecards.I have extended TimcardFooterCO and called Oracle DB package to delete zero timecards.But issue is Review layout page is not refreshing (showing all records including zero timecards) & if user is trying to submit timcard for approval then it is throwing error "The primary key specified is invalid Cause: The primary key values specified are invalid and do not exist in the schema. Action: Check the primary key values before attempting to carry out the operation again." and not allowing to submit timcard approval.After logout and