@jmiclou 

If you are using QBD US version, you can only migrate it to QBO US version with steps provided by RoseMarjorieA. If your company located in South Africa, you should open QBO South Africa version.

https://quickbooks.grsm.io/US

https://quickbooks.grsm.io/South-Africa

You may need a 3rd party migration tool (i.e Exporter for QBD, Importer for QBO)

https://transactionpro.grsm.io/qbd

Use promo code 20PERCENTOFF at checkout, valid until April 30th, 2020