QB Issue Resolution:

To clear this negative which represents owner contribution you  can perform a deposit instead of a journal entry and the deposit will come from your Owner Contributions equity account.

Resolution for Issue 'How do I bring a personal checking bank account to zero.' available: Yes (Solved).
Source: Intuit Community forum.

How do I bring a personal checking bank account to zero.: 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.

Support for Bank Account
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Error Recovery for Bank Account [Canada]
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