The Alarm Console in IM only displays history for the last day for all users, including the Administrator.
Note: The Alarm Console in the Operator Console works fine, Historic alarms are properly displayed.
This behavior is expected when applying steps that clean up all alarms in the IM Alarm Console.
Example rename ..:\Nimsoft\probes\service\nas\database.db and ..:\Nimsoft\probes\service\nas\transactionlog.db per step 3 in How to clean out all of alarms from UIM system?