Can I convert from QuickBooks accounting to QuickBooks self employed?

Glad to see you joining the thread, @Locologist.

I'd be delighted to provide information about QuickBooks Online Accountant and QuickBooks Self-Employed. These two software's are different versions of QuickBooks that uses different accounting method in recording your incomes and expenses.

Currently, the option to switch from online to self-employed is unavailable. Thus, you'll have to cancel your existing QBO subscription and sign up for a new QBSE account. To ensure that you keep a copy of your company data. I recommend exporting them into Excel before canceling your account.

Here's how to export:

1. Select the Gear icon at the upper right corner and select Export Data.
2. From the Reports tab, fill in the desired date range.
3. Click on Export to Excel.

To know more about the comparison between QuickBooks products, see this: QuickBooks Subscription Comparison.

I'm also adding this article to learn the basics of QBSE: QuickBooks Self-Employed Overview.

You're always welcome here in the Community. Just leave a reply if you have other concerns about this matter or other QuickBooks related-task. Stay safe!