Hello there, tomneuner.

I can show you how to convert your company file. 

Let's update QuickBooks for Mac to the latest release. If you have QuickBooks Mac 2016, you can follow these steps: 

1. While on QuickBooks, select QuickBooks on the taskbar on top. Choose Check for QuickBooks Updates and update to the latest version.
2. When the update finishes, restart QuickBooks Mac Desktop.
3. Go to File and select Export > To QuickBooks Online.
4. After we successfully copy and import your data, we'll send you an email.
5. From the email, sign in to see your data.

Here are some things you should do after converting your QuickBooks Desktop file to QuickBooks Online to ensure a smooth migration.

Please know that I'm just a few clicks away if you need more help. Thanks.