QB Issue Resolution:

There may be some unapplied transactions. Try running An AP detailed report and see if you discover anything there.

Resolution for Issue 'correct bill pay summary but incorrect negative A/P values when displaying the AP account. Why is this happening? Thanks, Frank.' available: Yes (Solved).
Source: Intuit Community forum.

correct bill pay summary but incorrect negative A/P values when displaying the AP account. Why is this happening? Thanks, Frank.: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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