Date attribute used in DataCube reporting page for "Number of days of data to export"?

Summary:

In the datacube reporting page we have a field named "Number of days of data to export" Could you please confirm the CPQ date field which is used for this field.
For eg: if I am entering a value of 100 in this field then on what field basis, I will get the data extract of past 100 days 100 days from the transaction created date or another date attribute?

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