Hi there, Alexis.

I know how challenging it can be to adjust to a new invoice layout when you're familiar with the old one. If you prefer to use the old email invoice, you can still use the previous email layout to email your customers' invoices, and I'm here to show you how.

The custom form style feature isn't fading away. This means you can still use the previous layout to invoice your customer.

Here's how to handle this:

1. Create or open an invoice you want to email to your customer.
2. Click the Manage button and go to the Design tab.
3. Under the Other templates section, choose the Standard option. (This will use the old layout of invoicing your customer.)
4. Select the Review and Send button. 
5. You'll now see the old email template to send to your customers. Enter the necessary information and select Send Invoice.

You can always manage your custom form styles with the old layout to continue sending invoices to your customers using the layout you prefer.

Why are we switching to the new invoice layout?

We are simplifying our forms to enhance your experience and upgrade the technology behind them, resulting in more features and faster development.

We're always committed to providing you with the best service and experience within Intuit QuickBooks. Rest assured, we'll take note of your feedback about this update. 

If you have further concerns with QuickBooks Online, please don't hesitate to leave a reply below. I'm always here to assist you.