Scenario:
After upgrading from QuickBooks Pro to the QuickBooks enterprise Contractor edition 2011, the QuickBooks integration manager is unable to transfer time entries from Web TimeSheet to QuickBooks.

Cause:
This is caused because of an issue with QuickBooks, wherein the users are not transferred when the upgrade is done.

Solution:
Users have to be re-transferred from Web TimeSheet to QuickBooks before the time entries can be transferred.