The Marketo bulk export for activities seems to output multiple (three to be exact) records for a single MarketoGUID. Is 'MarketoGUID' not a primary key? If not is (marketoGUID, activityDate) a primary key??? I've seen this duplicate issue across multiple pulls for both marketoGUID alone and a composite (marketoGUID, activityDate).
Running a pull for a 30 day date range in April seems to return activities that occurred in January??? Again this has occurred across multiple pulls.
I've also run into a situation where a certain lead has activities associated with it in the bulk export pull that precede the actual lead's creation and aren't actually reflected in the GUI at all.
Kurt Koller Have you seen any similar issues with your bulk activity pulls?