You will still be able to access and use your old Project level timecards that you created from the Site Diary or with the Company level Timecard tool. The Site Diary's Timecard module, the Company level Timecard tool and the Timesheets tool are automatically linked, so when time is entered in one tool, it will show up in the other two tools as well. All functionality in the Site Diary's Timecard module and in the Company level Timecard tool remains the same.