Hello there, es11.

Thanks for joining this thread. Let me share some helpful insights about handling 1099's with two different vendors.

In QuickBooks Online (QBO), we don't suggest setting up two locations for one vendor. In your case, since you're trying to send payments and 1099 report to different addresses, you have to make sure you manually edit the address every time you process a Bill Payment Check for your vendor.

Here's how:

1. From the left menu, select Expenses.
2. Click the Vendors.
3. Choose the vendor that has the open bill, then find the bill you'd like to pay.
4. In the Action column, select Make payment.
5. From the Bank/Credit account drop-down, choose the bank.
6. On the right, uncheck Print Later.
7. Fill in the Payment date and Amount.
8. Under Outstanding Transactions, check the bill you're recording a payment for.
9. Edit the address.
10. At the bottom right, select Save and Close.

Here's an article to learn more about recording bill payment check: record a bill payment check.

If you wish to locate the payment, just follow the steps below:

1. Go to Expense.
2. Click Vendors.
3. Choose a vendor and the payments will be listed from the Transaction List tab.
4. Select the payment and click View/Edit.
5. Edit the address.
6. Click Save and close.

Should you have other questions or clarifications about this, don't hesitate to let me know and I'd be glad to answer them for you.