Before canceling the account, you can download all of your work from QuickBooks Self-Employed. This is a good idea to hold on to your work for your records.
Go to the Reports tab.
In the Tax details section, select a tax year.
Select Download to get a tax detail report.
Download a report for each tax year you have in QuickBooks.
Once subscribed, we can import all your transactions.
I've also added these articles as your guide when importing data: