Hello there, kloponline! I'm glad you reached out. 
 

Let me provide some information regarding managing payroll items in QuickBooks Online (QBO).
 

First, there's no option to delete the pay types you've used previously. However, you can easily hide any unused pay types in two ways. You can hide them from the Run payroll page by clicking the Customize table button and unticking the pay types that you no longer use. You can also uncheck the pay types from the Employee profile page. Here's how to do it:

1. Go to Payroll, then Employees.
2. Select your employee.
3. From Pay types, select Start or Edit.
4. Uncheck the pay types you want to remove.
5. Hit Save.

Moreover, you can delete a deduction item from your employee. Here's a quick guide on how to do it:
 

1. Go to Payroll, then Employees.
2. Select your employee.
3. From Deductions & contributions, select Start or Edit.
4. Click the trash bin icon next to the deduction you want to remove.
5. Hit Delete, then Done.

Furthermore, you can configure your accounting preferences for payroll through the payroll settings. To access it, just click the gear icon and select Payroll settings. From there, you can verify if your payroll items are connected to the correct accounts.

You may find these articles helpful if you need more information on managing your pay types:

• Add or change pay types
• Change your accounting preferences in QuickBooks Online Payroll

Also, if you want to view useful information about your business and employees, you can run payroll reports.

If you need any further assistance with managing your payroll items, don't hesitate to leave a reply below. I'm always here to help you out.