I appreciate your thoroughness in sharing detailed information and the screenshot, Danila. Let's focus on finding a solution to ensure your bills are accurately represented.

In QuickBooks Desktop (QBDT), to display bills as positive amounts and bill payments as negative amounts, set your reports configured to show the summary in a balanced detail format. This involves customizing your reports to reflect the desired presentation of financial data.

For detailed steps, here's how:

1. Navigate to the Vendor menu.
2. Select Vendor Center.
3. In the SHOW dropdown option, choose Balance Details. 

You can refer to the screenshot below for your reference:

Additionally, I’d like to share some valuable articles that will help you explore the various reports available in QBDT and how to customize them to meet your specific business needs:

• Understand reports
• Customize reports

Thanks for trusting us to help, Danila. The QuickBooks Community team is committed to supporting your business success. If you have further questions about managing bills and checks, revisit this thread. We're always here to assist you in achieving your financial goals.