Data Archive will archive a recurring Salesforce task only when the full transaction (the entire recurring task) is selected with reference to the given filter criteria. You must give the values so that the entire recurring transaction will be selected. This business rule updates the interim table PURGEABLE_FLAG column to 'N' if any partial recurrence records are found in it. For more information on partial recurrence tasks, see the topic "Partial Recurrence Activities" in this chapter.