New invoice design doesn't let me to add the shipping date and tracking no

Welcome to the Community, power. Let me share some insights that could help you.

With the recent release of the updated invoice layout in QuickBooks, some classic features, such as shipping date and tracking number, are currently unavailable in the new experience. If the option to switch back to the old layout is still available, you can change it. If you haven't, you can send us feedback.

We strive to provide our customers with the best possible experience. You can send feedback to our Product Engineering team so they can consider adding the shipping date and tracking no. in the new invoice experience in the following QBO updates. Here's how: 

1. Click the Gear icon and choose Feedback. 
2. Submit a summary of your product suggestions. 
3. Hit Next to submit. 

I'll leave you these articles you can browse in the future. It contains information of the latest update with invoices and how to personalize them to your own preference. 

• See what’s new with estimates and invoices in QuickBooks Online.
• Customize invoices, estimates, and sales receipts in QuickBooks Online.

Feel free to reach out to us by leaving a comment below if you need further assistance regarding invoices. The Community space is always here to help you.