What happened to bundles? They are very important to how I organize my products and services for estimates and invoicing, but now suddenly they are gone.

Let me help you troubleshoot the issue you are facing with budles in QuickBooks Online (QBO), @tbr478. 

First and foremost, it's worth noting that the Bundles feature in QuickBooks is not available in QuickBooks Simple Start and Essentials. However, it is available in QuickBooks Plus and Advanced. If you need to create bundles, you may want to consider upgrading your subscription to Plus or Advanced.

If you're subscribed to QuickBooks Plus or Advanced and that feature has suddenly disappeared, we can perform some troubleshooting steps to determine if the issue is related to your browser. You can start by opening an incognito window to prevent your browsing history from being saved. Here are the keyboard shortcuts based on your browser:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P
• Safari: Command + Shift + N

Alternatively, you can clear the browser's cache to eliminate common errors that may hinder the application from working properly. Clearing the cache will reboot the system, allowing you to work with a clean slate. You can also use other supported browser to see if the issue persists. 

Additionally, you can read Set up and track your inventory in QuickBooks Online to learn how to track and manage your inventory, including creating Bundles in QBO.  

I'll also add this guide on how to Add inventory products in QuickBooks Online to give you a better idea of how to update your products to QuickBooks Online Plus and Advanced. 

Please don't hesitate to post here in the Community space if you have more questions about bundles in QBO. The Community is always here to help. Have a good one.