For rental properties, the QBI carryover can be reported in the carryover interview for each rental activity (check the box that you have At-Risk, PAL or 179 loss carryovers). The following screen will ask for the QBI. 
In TurboTax Online, you can see this screen under "Less common situations" in the Rental/SCH E section. @midtowncpa Thanks for the question.
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