NIS 2012 - System Insight, bug or normal function?

Hi there:

 

Please take a look at this System Insight graphic...

 

12-6-2011 9-52-04 PM.png

 

Note the Performance Alert box for 12/6/2011 in the middle of the screen shot.

 

When I click on "View Details," NIS brings me to Performance Alert in Security History which is empty.

 

Now, to be honest, I deleted my Full Security History about an hour prior to doing this. I would like to

think that a compressed record of some sort would be stored internally (in NIS) and linked to the above

View Details data pick, but it is not.

 

Once you purge Performance Alerts in Security History, all the data which is associated with the pick is deleted, too.

 

Is this considered a "bug" or just "normal function?"

 

Thanks,

 

Atomic_Blast :)