Afaik, according to their latest policy in 2020, Intuit Data Service only accepts to migrate data from QBD 2015-2018 to QBO SA.

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

You may have 2 options:

1. Utilize a migration tool. i.e TPExporter for Desktop, TPImporter for Online

https://transactionpro.grsm.io/qbo

2. Purchase a 3rd party conversion service.