In QuickBooks Online, assigning class and location to the payment isn’t possible. This is because it’s already assigned on the invoice. The Receive payment feature has no options for class and location.  Correct

Thus, it shows as Not Specified on the reports. This is not true for all payments. Customer A made 2 separate payments for invoice # 1234. Both applied to invoice # 1234. Payment 1 is showing on P&L, Transaction List by Customer etc. when pulled by class/location. Payment 2 only comes across when reports are pulled by Not/Unspecified. Why and where is the disconnect happening?