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.
