This is not something that we want you to experience, @MargauxInDenver.

That being said, did you encounter any error with converting your QuickBooks Desktop company into QuickBooks Online? This is for me to provide you with an accurate resolution.

In the meantime, you can read through these articles for the step-by-step process: Move your QuickBooks Desktop file to QuickBooks Online.

You can always visit the Community site if you have other concerns, or if there’s anything else you need. I'm always here to help. Wishing you the best.