The Download Draft/Rejected Time Sheets page allows you to download a .csv file that can then used to upload draft/rejected time sheet data in the Upload Data section of the Admin menu. Using an upload, you can enter large sets of data and eliminate the need for manual entry if there are a large number of time sheets that need to be resubmitted.
The time sheet upload is typically used by supplier administrators to batch-upload multiple time sheets into SAP Fieldglass.