QB Issue Resolution:
You can probably delete them and reenter. Why not make a backup of your company file (using the File->Back up function). Then try deleting just the first one and reentering it. If that goes well continue on.
If for some reason things don’t go well, revert to the backup.
Resolution for Issue 'RECEIVED PAYMENTS AGAINST WRONG INVOICES/CREDIT MEMOS FOR MONTHS' available: Yes (Solved).
Source: Intuit Community forum.
RECEIVED PAYMENTS AGAINST WRONG INVOICES/CREDIT MEMOS FOR MONTHS: 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 Invoice
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Error Recovery for Invoice [Canada]
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