When running the nwadmin purgeHistoryListData command you receive the below error.
No matching workflow instance ids found in the Nintex Workflow database.
ADDITIONAL INFORMATIONThe error occurs when the nwadmin PurgewWorkflowData command was run before the nwadmin PurgeHistoryListData; the PurgeHistoryListData command should be run first. The nwadmin PurgeHistoryListData command queries the workflowprogress table in the Nintex Content database to validate the workflow instance IDs to be purged from the history list. If the workflow instance IDs cannot be found then the nwadmin command will return a error. The PurgeWorkflowData command will remove references to the workflow instance IDs resulting in orphaned list items in the workflow history list.