I am not sure why you setup a foreign currency as home currency and turn on the multicurrency feature. We found in most cases when user has registered on certain QBO (country) version by mistake. If you are located in Australia and don't need to have the multicurrency feature, SS plan is enough. https://quickbooks.grsm.io/Australia
You may utilize the trial period of TP Exporter and TP Importer to migrate your data.