export splits to CSV does not seem to include activity date

When I export splits to a CSV, date is not part of the data or part of the file name.  As far as I can tell.  Metadata somewhere about the activity or the individual splits indicating when the thing happened would be very handy.  Ideally in the data (an activity date on each row or a split date on each row -- in case the activity spanned days, which I would likely never see).  Alternatively the activity date could be part of the file name (to be parsed as a standard).  Is there a date somewhere that I am missing?

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