Weekly timesheet dates cannot be changed in QuickBooks.
Legacy KB ID: 249
When I have entered a weekly timesheet in QuickBooks if I have entered the incorrect date it cannot be changed.
To change this date instead of going into the Weekly timesheet you need to select 'Enter Single Activity'. Each entry you had on the Weekly Timesheet will appear as a Single Activity, you can change the date on each of these Single Activities and then this change of date will appear in the Weekly Timesheet.