Hello alice-bradley-gl. Glad to have you reach out to us in the Community. Sometimes it's necessary to migrate your data from QuickBooks Online Canada to the US version. I'll be happy to point you in the right directions so you can achieve your goals. You can migrate your data using the suggestions provided by Fiat above. Another option is to manually export some of your data out of the Canadian version and into the US version. Here's an article with more info on how to:
Export Data out of QuickBooks Online.
You can then import the data into the US account using the steps provided in the following article here. Let me know if you have additional questions. I'm here to help you achieve your QuickBooks goals.