Timesheets can be reallocated to different project tasks in bulk.
1. Via the Timesheets Dashboard -> Reallocate Timesheets button.
2. From this page, select one or more timesheets via the checkbox's available
3. At the bottom of the page, select from current Projects and their Tasks and click Apply Changes to reallocate the selected Timesheets.
4. Repeat the process to bulk reallocate more timesheets.