Welcome to the Intuit Community forum, @gillelen.
Right now, there isn't a direct way of importing employee information from another application. If you convert a company file from QuickBooks Desktop to Online, the conversion includes employee contact information, but not payroll data.
You can only import the following list to QuickBooks Online:
As another workaround, you need to manually add employees and enter their W-4 details.
I've also added these articles for your guidance about employee entries:
Let me know if you have follow-up questions and I'll get back to you.
Thank you very much.
Thanks for getting to me, @gillelen.
Here are the outlined for your additional questions:
Keep me posted if you have follow-up questions. I'm always around whenever you need help.
Thanks for getting back to us, @gillelen.
Based on the screenshot provided, it looks like there’s too much data stored in your browser. Clearing the cache can help fix unexpected behavior such as error messages or loading issues.
The process varies depending on the browser you’re using.
Once done, open QuickBooks again and reimport the data. Regarding to the other questions, I’m here to provide some clarifications.
As mentioned by my colleague, there's no need to set up the payroll service in QBO. This is because you can add employees without activating the feature.
Export the IOP transactions into QBO so you don’t have to manually enter them. I know that @MaryLandT already provided this link, but I'm adding it again to ensure you can transfer the data automatically.
Even if the account is already canceled, the previous employees' data will stay in Intuit Online Payroll.
To ensure you stay on top of the year-end’s taxes and forms, just choose which payroll system to keep. However, if you still need to speak with our Payroll Support Team, the most up to date contact details can be found here: QuickBooks Online Customer Support.
To help get started using the application, I'm also adding a link to our video tutorials: Small business.
If you have any further questions about QuickBooks, please know I’m just a comment away. Have a good one.