Open QuickBooks Desktop.
Select Company > Export Company File from QuickBooks Online
Select help and click on Update QuickBooks
Check all updates in the Update Now option
Start QuickBooks again and finish installing the updates
Enter your QuickBooks Online login info
Pick the online company you want to import your data into or select to create a new company
If you get any issues with exporting the company file or migrating the data, get instant help by the QuickBooks data migration team by calling the QuickBooks support number 1800-316-0126.