The Profit and Loss by Job report shows amounts under Customer:Job names to which they are not assigned.
Each transaction has a source name and one or more target names. When you enter a Customer:Job name as the source name, e.g., the "Pay to the order of" field of a check or the first line of a journal entry, while leaving the target names blank, QuickBooks, will copy the source name into the blank target name fields. When this occurs, those targets are assigned to the Customer:Job in the source name field.
Open the Transaction Journal report to see a transaction's source and target names.
To avoid having Customer:Job names report incorrectly, select one of the following options: