Many builds ago, the installation process was improved to not overwrite some of the System Settings (Tomcat & Configuration Tool memory settings).
However the installation process still destroys the current value in the AwareIM Server memory settings and the Tomcat timeout.

Now that 64-bit is now the default in the installation process in V7.1, applying new builds has become a much smoother process. It would be very helpful to have the install process save these two System Setting values in an upcoming build.
Oh .. and including the latest MySql connector in the installation process would make it VERY slick install process.