Can I migrate from Sage business cloud to Qbo how do I import transactions for the current year in detail; I dont want to loose detail for mgnt accounts purposes?

As far as I know, company only offers a free conversion service from Sage 50

https://quickbooks.intuit.com/learn-support/en-za/more-help-articles/our-comprehensive-guide-to-dataswitcher/00/434891

You may export all of your data from Sage Online to XLS and import them into QBO South Africa version by using TP Importer.

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

https://transactionpro.grsm.io/qbo