Change vendor to employee and keep all transactions with person

Thanks for reaching out to the Community space, @Emanuel140.

Changing a vendor to an employee in QuickBooks Desktop (QBDT) and transferring all the transactions together is currently not an option.

To make the vendor an employee, make the name inactive and create a new employee. As for moving the transactions, if you have an active payroll subscription, you can enter After the Fact Payroll, so you'll have the option to add, authenticate, and edit some payroll info.

To turn on the after-the-fact payroll, follow the below steps:

1. Go to the Edit menu at the top and select Preferences.
2. Click Payroll and Employees.
3. From here, choose Company Preferences.
4. Choose the Full Payroll button.
5. Click OK.
6. Go to the Help menu.
7. Select QuickBooks Desktop Help.
8. Enter after-the-fact payroll.
9. Follow the detailed steps outlined.

However, if you don't have an active payroll subscription, you'll have to set up payroll manually and run payroll for that specific employee. 

For more details on the process above, you can check out these articles:

• Enter historical tax payments in Desktop payroll
• Set up manual payroll without a subscription in QuickBooks Desktop

As for amending the 1099 form filed, refer to this Tax 1099 article, Different types of 1099 corrections after forms have been submitted.

You may also consider reaching out to your accountant for guidance on the proper way to handle this situation. They can also guide you in preparing the W2 form.

Let me know if you have other questions. I'm just around the corner to help. Take care and have a great day!