Let me help you sort this out, lcasel.
Once your vendor pays an extra amount above the bill total, QuickBooks Online automatically creates a credit. To prevent the system from marking your bills as paid after saving, you might want to double-check that the automatically apply credits feature is turned off.
Here's how:
- Click the Gear icon at the upper right corner and choose Account and Settings.
- Go to the Advanced tab in the left panel.
- Select Automation and remove the check-mark for Automatically apply credits.
- Tap Save and hit Done.
However, if this option is turned off, I'd suggest logging out of your account and logged back in. After that, delete and re-create the bill.
You can visit this link: Enter bills and record bill payments in QuickBooks Online. This will provide you with steps on how to enter bills and other options on how to pay them using cash or a check.
Keep me posted if you have any other concerns. I'm always here to provide additional assistance whenever you need one. Have a good one.