Thank you for reaching out to the Community, @kathyabb.
Currently, removing the Tracking # field is unavailable. You can, however, uncheck the shipping options by editing the invoice template's content, which will remove Ship to, Ship date, Ship via, and Tracking #.
Moreover, you're right that there is no option to export the invoice template as well as an import option for new styles.
Your ideas are brilliant, and other users may also find them helpful.
In the meantime, you can submit feedback to our software engineers. They may consider adding it to our future product updates.
Here's how:
1. Go to the Gear Icon.
2. Select Feedback.
3. Type in a brief description of your suggestion and click "Next".
If you want to stay in the loop about the new features and product updates, you can visit this link: QuickBooks Online Blog.
You can read through this article if you want to learn how to personalize your email message to your customer: Customize invoices, estimates, and sales receipts in QuickBooks Online.
For more questions about invoice templates, don't hesitate to reach out to us again. Keep safe.