This set of reports will show you some information about:
How to import these reports (or re-import if you had imported previous version of these repots)?
Note:
All nse processing information in these reports is from "Evt_NS_Event_History" table and by default purging maitenance rule this table has limit of 1 million rows. If necessary then you can set to store there at least 2 million rows for "Evt_NS_Event_History" table to have more history information if required.