We implemented this change also, but I noticed that it would sometimes revert back to the default/British date format. After the 3rd or 4th time changing it, some digging around revealed that you will also need to update the value for SystemCulture to "en-US" (or whatever your preference may be) in the ConfigurationData.xml file. Everytime you edit the configured app in ConfigurationCentre, it copies settings from this xml file as a template and overwrites your tps.config (and the fix you've implemented above)
- Find/Open the ConfigurationData.xml file in the ServiceDesk.ConfigurationCentre folder on your web access server (e.g., "\ \LDSDWEB\ServiceDesk.ConfigurationCentre")
- Perform a search for "SystemCulture" and update the Value for the one associated with your WebAccess application to "en-US"/or your preference.
(the xml file contains a VirtualDirectory for each of the Configured Applications (e.g., Framework, WebAccess, etc.) in your ConfigurationCentre, there are several SystemCulture entries) - Save the xml file.
-Brian