export company file from mac2020 to QBO windows

Good Afternoon MarthaCR,

Thank you for connecting with the Community! Here is how you can export your file from Mac2020 to QuickBooks Online:

1. While on QuickBooks, select QuickBooks on the taskbar on top. Select Check for QuickBooks Updates and update to the latest version.
2. 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 email you.
5. From the email, sign in to see your data.

However, if you are having issues with this, I urge you to call us at 800.488.7330 so we can assist you further. Let me know if you need anything else. We will be here to help! See you later. 

@MarthaCR 

Which MacOS do you run?