I am trying in Crystal 8.5 to get records for those who did not donate in a given date range, but did give in a different date range (i.e. did not donate 5/1/1985 thru 4/30/2009, but did donate 5/1/2009-4/30/2010). Those who meet the criteria are then marked as "new donor". I am getting too many false positives-records who are not "new donors" but are returned as such.
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