As an FYI to all of you using QuickBooks 2013, it has been discovered that Release 7 breaks the sync between Intuit Field Service Management and QuickBooks. For this reason, if you have not already downloaded R7, don’t download it yet, as there is no known solution for the issue.
The article linked above has some more information and troubleshooting options, and if you’re already experiencing this issue, your best bet is to get in touch with QuickBooks technical support.
Let us know if you’re experiencing issues and we’ll help the best we can!