Good day, @binvoice.

Thanks for bringing this up in the QuickBooks Community page. I'll share with you some troubleshooting steps we can use the address the issue. 

Sometimes too much cache stored in a browser can cause unexpected behavior with the program. This can be the reason why all previously entered rates changed back to default after changing the invoice name. 

To isolate the issue, try opening your account in a private window. This way, we can check if the concern is cache-related. Simply press the following shortcut keys to access this mode:
 

• Ctrl + Shift + N (Google Chrome).
• Ctrl + Shift + P (Firefox).
• Control + Option + P (Safari).

Once done, try changing again the invoice and see if you're still getting the same results. If not, go back to your regular browser and clear its cache. If the issue persists, use another supported browser. This might be a temporary issue with QuickBooks and the current browser that you use.

To prevent this from happening, make sure to double-check the actual invoices before sending them to your customers. That way, we can see if there are any changes made when editing the transaction. 

Moreover, you can personalize and add specific info to your sales forms in QuickBooks. Customizing their appearance and layout is a simple yet effective way to enhance your business communications.

Please let me know the result of the troubleshooting steps. I want to make sure you're able to get back your business and send the correct invoice rates. Have a good one.