Can anyone help me get back to the old layout?

Hello there, @ccones.

We understand that you're accustomed to using the old layout. We also appreciate you sharing your concern about this change.

If you're referring to the picture below, click on the old layout button at the top right of the screen. This will route you back to the old layout. 

Send feedback to our product engineers if this isn't the layout concern you are referring to. The responsibility of deciding which features will be added in the future lies with them.

Here's how:

1. Go to the Gear icon.
2. Under the Profile column, select Feedback.
3. Enter your feedback or suggestions.
4. Click Next.
5. Choose Feedback for the category.
6. Click Send.

You can also use this link to send your feedback: Customer Feedback for QuickBooks Online. 

I've attached an article on how to convert an estimate to an invoice to keep your books accurate: Convert an estimate into an invoice in QuickBooks Online.

Comment below if you have additional questions about QBO. We would be delighted to offer our assistance to you.