Date Modified is changing when exporting Cases

[wts]

Operating System: Windows Server 2003, Standard Edition, Service Pack2
Client Operating System: Windows XP Professional, Version 2002, Service Pack 2
SugarCRM Open Source v 4.5.1d
Webserver type Apache

Problem: Whenever I export Cases from the cases module, the Date Modified for all cases is getting changed to the date of exporting these cases. This is happening only recently, altough I didn't change any settings regarding the Date.

Another query, is what are the configurations and settings that should be done to send email notifications whenever a case is assigned to someone.

[dpatech]

The cases export is controlled by the create_export_query function in modules/Cases/Cases.php. By default this includes all fields in the Cases module with the cases.* statement. It should return the correct date_modified date unless this function has been modified or there is some caching issues going on.

As for Case Assignment notifications, this can be controlled via each individual user preferences. Have each user click on the "My Account" link and make sure the "Notify on Assignment" is checked.

[wts]

Thank you for your assistance...

But please note that after exporting the cases, Date Modified is being changed to the date the cases are exported in the database also; not only in the report. That means that it is considering exporting these cases as modification, thus the Date Modified is changing after exporting. When I viewed these cases in Cases Module in SugarCRM, the Date Modified is changed to the exact date and time I exported these cases even though I didnt modify them on that day.

What is causing this problem?