third-party application to convert data from QBO US version to QBO Global version.

You may have 3 following options:

1. TP Importer to migrate your data.

https://get.transactionpro.com/qbo

2. Convert your data to a QB Desktop file and use the trial version to access your historical data for good. You will start from scratch in QBO Global version to lower your conversion costs.

3. Purchase a 3rd party conversion service.

Welcome to the Community space, @BeatriceR.

I'll ensure that you can find a third-party application that can convert data from the QBO US version to the QBO Global version.

We have a lot of third-party applications that you can integrate with QuickBooks, and each app has its unique feature design for specific customer's needs. 

As much as I want to suggest a third-party application for you, we are unable to do so. Let me guide you instead on how you can search for an app that will suit your needs.

Here's how:

1. In your QBO account, go to Apps.
2. Select Find apps.
3. Type in keywords in the search bar or choose Browse categories.

Moreover, I'm adding this helpful article on disconnecting an app in QuickBooks Online: Transfer app ownership or disconnect apps.

Come back to this post if you have more concerns or follow-up questions about connecting a third-party app in QBO. I'll be here to lend a helping hand. Have a good one!