As an administrator, I noticed an error and reopened an employee's timesheet, and in the comments asked the employee to correct the error. The employee received no notification that the timesheet period was reopened, or the reason for it. Per the help screen: "No notification is sent when you reopen a timesheet. If you want to be certain the timesheet’s owner notices the item, tell them directly that you reopened it.". That defeats the purpose of having a comment field in replicon, that notification needs to be added to the workflow.