Tomcat with IntelliJ: Temp directory name?

Hi,
How does IntelliJ choose the temporary directory name for the the files (configuration files + classes/JSPs) when running with Tomcat?

The reason I ask is that recently the temp. directory name has changed from:
C:\IntelliJ-Data45\system\tomcat_MyWebApp_7b1280ce
to
C:\IntelliJ-Data45\system\tomcat_Tomcat_7b1280ce
and i'm not sure what I did to cause this change.

Thanks for any help :)