How do I add a current vendor to the Business Network? I have only seen how to add a new vendor.

We'll have to make sure you'll be able to add your current vendor to Business Network, Jasper.

The Business Network lets you connect with your customer and vendors and helps you streamline workflows, better predict cash flow, and reduce manual entry tasks.

For now,  you'll have to add the current vendor just like how you add a new vendor. To give your more information about QuickBooks Business Network, I've got this handy article for your reference: Learn about the QuickBooks Business Network.

Furthermore, consider checking out updates about the business network functions or any QuickBooks Online new features on this page: QuickBooks Blog.

Keep in touch if you need anything else about the new feature or anything QuickBooks. I'll always be right here to help you.

If I add the vendor again, won’t I have a duplicate?  And how will QuickBooks combine the 1099 payments if there are two vendors?

Let me provide some insights about adding existing vendors to QuickBooks Business Network in QuickBooks Online (QBO), JasperContracting.

I understand how critical it is to have your current vendors connected to the Business Network, as this allows you to receive bills directly from your vendors in QuickBooks. By editing their information in your QBO account, we can connect your vendors. Here's how it's done:

1. Go to the Expense tab, then select Vendors to edit.
2. Locate the vendor name you want to link to the Business Network.
3. Click on Edit.
4. On the Company name, enter or search the business name you want them to link.
5. Once done, press Save.

We can also establish an entirely novel vendor and merge it with an existing QuickBooks Business Network vendor. As a result, the existing vendor's history will appear on the new account sent merge link. This is how you add a new vendor.

1. Go to Get paid & pay or Expenses, then select Vendors.
2. Click New vendor.
3. Complete the fields in the Vendor Information window.
4. Hit Save.

To merge vendors, check out this article for instructions and detailed steps: Learn how to keep your accounts, customers, and vendors organized. If the process still didn't work on your end, I recommend contacting our Customer Support Team. They'll pull up your account in a secure environment and help you with this one. Here's how to reach them: 

1. On your QBO account, click Help (?).
2. Tap the Search tab to get started:
3. Select Contact Us.
4. Enter the topic of your concern.
5. Click Continue.
6. Choose either Chat, Appointment, or Callback.

For detailed information about Business Network, kindly visit: Learn about the QuickBooks Business Network. Moreover, I'd also like to share this link that can serve as your reference where you can search for articles that can guide you in managing your QuickBooks account: QuickBooks Online Help Articles.

Feel free to leave a reply if you require further assistance with adding your vendors/customers to the Business Network in QuickBooks. The Community team always has your back. Have a good one.

Unfortunately, neither editing the current vendor, or creating a new vendor/merging works.

I will reach out to customer service.