Interesting.  I didn't have any PTP sales this year.  However, I entered a PTP sale in one of my clients account that had a prior QBI loss to see what would happen.  It correctly picked it up on line 7 of Form 8995, which offset the current REIT income and PTP loss on line 6. Do you have an entry in the Prior Unallowed Qualified Business Income and Deductions section?  This section is below the Prior Year Unallowed Passive Losses Section.