Hi there, kswingert.

I'm here to share some information about how vendors and customers in QBO.

We're unable to change a customer to a vendor since they're different entities. You'll have to set up a new vendor, then locate the customer's transaction and update its name. This way, you won't have to manually reenter them. After that, you can now delete the customer. Here's how:

1. Add a new vendor.
2. Go to the Reports menu.
3. Run the Transaction List by Customer report.
4. Edit each transaction linked to the customer, and then save them to the new vendor name.
5. Once all transactions are edited/added, deactivate the customer.

I'm also adding this article to change vendor, customer, or employee name type in the program: Moving names from one list to another

Just add a comment below if you need more help in handling your customer and vendor transactions. Take care and have a great rest of the day.