Good day, @lmoore. Let me share some insight on why prepopulating happens to you when copying bills.
In QuickBooks Online, when we copy a bill, it is designed to automatically prepopulate with the vendor's name from the original bill. I recommend manually modifying the vendor names after copying the bill.
For further checking, I recommend contacting our support.
Once you receive the payment from your vendor, record it in QuickBooks Online. You can refer to this article for detailed step: Enter and manage bills and bill payments.
If you have other concerns besides copying bills, don't hesitate to post them here in the community. Have a wonderful day!
