The new weekly timesheet will revert to the old weekly timesheet when the timebill form being used does not have the

popup only

checkbox checked for memo. (Double check me on this.) It should also be mentioned that the standard form DOES NOT have this box checked. So users with uncustomized timebill forms will not have access to the weekly timesheet after implementation. It silently reverts to the old weekly timesheet. The main difference is that on the old weekly timesheet the memo is at the line level, not the cell level, so you can't have several entries with different memos on the same line.