For Rental Properties, you need to manually add them in FORMS, because Accounting facts is not injected (ie not injected via import of financials).

Also, make sure to classify "Accounts", ie tag under rental

Sample Process

See below snip of dummy QB report with 2 Rental Properties


Add manually 2 Rental Properties under "Income" > Rent.

1. Add each value (ie expenses and income) for every Property.

Summary "Income" of 2 properties