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The cumulative_ncitconcept_history must be reformatted in order to be loadable into the LexEVS terminology server. This is done using Format_History on the processing server. Copy the cumulative_ncitconcept_history to "/local/content/vocab_processing_OWL2/FormatHistory/". When When formatting is complete, the output file "concept_history.txt" should be copied back to the Production-History folder as a backup.