Thank you for posting your concern here in the QuickBooks Community. Let me share more information on switching your subscriptions.

We need to start by exporting your data and then canceling your subscription with QuickBooks South Africa. After that, we can subscribe to the US QBO and then import the data. To cancel your subscription, here's how:

1. Go to the Gear icon.
2. Under Tools, select Subscription and Billing.
3. Click Cancel.

To import, follow these steps:

1. Go to the Gear icon.
2. Under Tools, select Import Data.
3. Choose the data you will import.
4. Click Next.
5. Hit Done.

After these steps, we'll proceed with subscribing to your new QuickBooks Online US and then import your data.  

Let me share this article to check on the most common questions when importing data and what features are exporting:

• Common questions about importing data to QuickBooks Online
• Export reports, lists, and other data from QuickBooks Online

If you still have questions about your subscription, please don't hesitate to leave a comment below. Have a great day, and take care.