I appreciate the additional detail, Jeff. Let me shed some light on how the Enhanced Inventory Receiving (EIR) works in QuickBooks Desktop (QBDT) Enterprise. 

Yes, you're right. The Bill Received checkbox on the Item Receipt window is unavailable when you enable the EIR feature since it separates the receiving process and transaction from the vendor bill entry and accounts payable accounting.

Without the EIR, QBDT would increase the inventory on hand and accounts payable. The item receipts wouldn't show in the Pay Bills window unless converted into a bill.

With the EIR, the item receipt increases the inventory on hand, and a liability account called Inventory Offset will be created. Even when the bill is entered, the item receipt will remain.

That said, you can rely on your A/P Aging report instead of the Bill Tracker. For further guidance, I suggest consulting your accountant to ensure your books are accurate. 

Moreover, you may refer to this article to settle your payables in QBDT: Pay bills in QuickBooks Desktop.

Keep in touch if you have further concerns about the bill tracker, and we'll ensure to respond promptly to your queries. Stay safe, and have a great rest of the day.