Let me give you some insights about QuickBooks Online @ahacoen. To have another company, you'll need to have a new QuickBooks Online account. It isn't possible to have multiple companies under one QBO account. That's why you won't be able to transfer the data from one company to another.
From QuickBooks, you can export your data lists to Excel. Then import it manually to your new QuickBooks Online account.
To export your Lists, here's how.
I'll be leaving you an article on how to move your chart of accounts to Quickbooks Online: Move your chart of accounts to QuickBooks Online.
Always feel free to drop by the Community if you need any help. Have a nice day!