Dataswitcher is only for Migration of Sage 50 and Xero currently.  

You can check out these articles to help with your QuickBooks Desktop to QuickBooks Online

Migrations Links:

Update QuickBooks Desktop to the latest release

https://quickbooks.intuit.com/learn-support/en-ca/getting-started/update-quickbooks-desktop-to-the-l...

Download a trial of QuickBooks Desktop

https://quickbooks.intuit.com/learn-support/en-ca/new-subscriptions/download-a-trial-of-quickbooks-d...

Move your QuickBooks Desktop file to QuickBooks Online

https://quickbooks.intuit.com/learn-support/en-ca/update-products/move-your-quickbooks-desktop-file-...

Migrating from QuickBooks Desktop to QuickBooks Online (Best Summary)

https://quickbooks.intuit.com/learn-support/en-ca/import-or-export-data-files/migrating-from-quickbo...

What to expect when you switch from QuickBooks Desktop to QuickBooks Online (A-Z list)

https://quickbooks.intuit.com/learn-support/en-ca/import-or-export-data-files/what-to-expect-when-yo...

QuickBooks Online vs QuickBooks Desktop (Features Comparison)

https://quickbooks.intuit.com/ca/move-to-online/

Conversion checklist for converting your files into QuickBooks Online (Pre Conversion)

https://quickbooks.intuit.com/learn-support/en-ca/getting-started/conversion-check-list-for-converti...

What to do after converting from QuickBooks Desktop for Windows to QuickBooks Online (Post Conversion)

https://quickbooks.intuit.com/learn-support/en-ca/getting-started/what-to-do-after-converting-from-q...

How to fix errors when converting from QuickBooks Desktop to QuickBooks Online

https://quickbooks.intuit.com/learn-support/en-ca/migrate-services/how-to-fix-errors-when-converting...