Hello there, BenTam.

Thank you for getting back to us. Allow me to step in for a moment and provide additional clarification about the company file format in QuickBooks Desktop.

The option to create a QBX file (accountant's copy) is available for you to send the company file to your accountant. Right now, the ability to convert an accountant's copy to a working file (.QBA) or a regular company file is only possible in QuickBooks Desktop Accountant editions.

In case you need to visit the article about the Accountant's Copy, I'm adding the article again for your reference:

Use the Accountant's Copy.

Please don't hesitate to come here if you have additional concerns with the conversion. The Community has your back.