QB Issue Resolution:

edit the item used on the client invoice or sales receipt

items control what account is posted to

Resolution for Issue 'My income for one particular client is showing up in the wrong category of income on my profit loss sheet. Where can I go to change where this income is categorized?' available: Yes (Solved).
Source: Intuit Community forum.

My income for one particular client is showing up in the wrong category of income on my profit loss sheet. Where can I go to change where this income is categorized?: 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 Income
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Error Recovery for Income [Canada]
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