The Job/Item structure form QuickBooks cannot go as Project/Task in Web TimeSheet. However, either Jobs/Sub-jobs or Item/Sub-items from QuickBooks can go as Project/Task in Web TimeSheet and this is for the fact that there is no such data structure relationship between Web TimeSheet and QuickBooks.

Use the following Structural Relationship instead,

Job > Project
Sub-job > Task

Item > Project
Sub-item > Task

Note: Job/Sub-job relation is used in QuickBooks, typically for Payroll purposes. It can also be used to simply track time. The Item/Sub-item relation is used in QuickBooks, typically for Client Invoicing or Billing purposes.