We understand how crucial accurate information is when printing checks for your vendors, CARMENUSVI. Allow me to share additional insights to ensure duplicate vendor names aren't showing up.

As I've checked our records, we haven't received recent similar investigations from other users relating to your concern. We recognize the relevance of printing these checks accurately. For now, we can perform other fixes to help rectify your printing experience. 

That said, we suggest using Adobe Acrobat for printing checks in your account. If this doesn't have its latest release yet, we can install or update Adobe Reader and set it as your default PDF viewer. To do this:

1. Go to the + New icon and select Print Checks.
2. Click on the Print setup and select No, continue setup.
3. Select the latest version of the Reader link. This takes you to Adobe’s page where you can download the latest version of Acrobat Reader.
4. After installing Acrobat, go back to QuickBooks. Then select the How? link to set Adobe Reader as your browser’s default PDF viewer.
5. Go back to QuickBooks and select View Preview and print sample. Then select Print.
6. Follow the on-screen steps to finish printing your sample check.
7. Check the alignment of your sample against a blank check.

Once ready, you can run printing their checks again.

However, if the issue still persists, we recommend contacting our Customer Care Team. This way, they can further review your account and create an investigation ticket if necessary.

Here's how to reach them:

1. In your QBO account, click the Help icon and select Contact Us.
2. Enter your concern and click Let's Talk.
3. Select Start a chat or Get a callback with a support expert.

Furthermore, I've included this guide to help you track bills and record the payments: Enter and manage bills and bill payments in QuickBooks Online.

We'll always be available in this thread if you require additional assistance printing checks in your account.