Hi there, Matteo_S. 

Let me provide you with some information about changing from the old invoice layout to the new invoice layout in QuickBooks Online (QBO).

If you revert to the old layout from the new layout, the company name will stay as they were and show the same on your QB account, just as how you were using the old invoice layout before.

Yes. Editing your company name while using your new layout and transferring the old layout is possible. Know that switching to layouts only changes the interface and your data in QBO won't be affected.

To learn further information on the newest update of the new layout in QBO, you can check out this article that discusses it: See what’s new with estimates and invoices in QuickBooks Online.

Don’t hesitate to comment below if you have other inquiries about managing your invoice in QBO. I’ll be here to assist you at any time.