Currently, QuickBooks Online (QBO) doesn't support 1099-DIV filing, Pward. However, you can retrieve information from QBO to record in your 1099-DIV form and mail it to the IRS.
You'll need a 3rd-party application to import your data from QuickBooks. You can navigate to the Apps Center inside QBO to search for apps.
Here's how:
Click Apps in the left navigation menu.
Click the Browse Category drop-down menu, and select Sync Data.
Select the app you want to integrate.
Click Get App Now and complete the following on-screen instructions.