You can view additional information about the SharePoint Online operations in the following Frequently Asked Questions (FAQs).
Can I use QCommands to configure, back up, or restore the SharePoint Online app?
You cannot use QCommands to configure, back up, or restore the SharePoint Online app.
Why are jobs being completed partially?
Beginning in Service Pack 26, by default, large back up jobs are split into multiple jobs with a limit of processing 320000 items in each iteration.