I see how confusing it is when the previous bill appears when you create a new one, @LSpr.
Rest assured, I'm here to assist in resolving this issue that meets your needs.
Understanding the underlying factors contributing to this issue is key to addressing it effectively. One possibility is that the auto-recall feature, which pre-fills transactions, may be enabled, resulting in the automatic population of the previous bill information.
We can verify this in the Accounts and Settings section, and if desired, we can turn off the feature that automatically populates previous bill information on future bills.
Here's how:
Navigate to Settings ⚙, then choose Account and Settings.
Click Advanced.
In the Automation section, select the pencil icon.
Choose Pre-fill forms withpreviously entered content and toggle the button to disable the auto-recall feature.
Click Save at the bottom of the Automation box, then Done to record your changes.
Once you have finished the necessary tasks, you can refer to this link for detailed instructions on how to track bills and accurately record payments in QBO. By diligently entering your income and expenses, you will gain a holistic understanding of your business and its financial performance: Manage bills and bill payments in QuickBooks Online.
If you require further assistance or have any additional questions, please don't hesitate to reach out. I'm here to help you navigate through this situation and ensure a smooth experience with creating new bills in the future.