Visual Analytics cannot show a row that does not exist in the data source. In this example, there is no Status for TaskA for Jan 12 and Feb 12 but those rows do exist in the data source with missing values. If rows 4 and 5 did not exist at all, Visual Analytics could not insert them.
This is what the table looks like with missing values in rows 4 and 5. If rows 4 and 5 did not exist, then TaskA would show only one row: Success.
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