I installed that app and loaded your data. It appears to parse just fine. As far as I can tell, the empty fields are empty because they're not in the sample events. The TA expects these fields in this order. "id","date","time","description","ip","nt_host","mac","user","transaction_id","qresult","probation_time","correlation_id","dhcid","vendorclass_hex","vendor_ascii","userclass_hex","userclass_ascii","relay_agent","dns_reg_error" If you're getting results like these then perhaps consider re-installing the TA.
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