title: InstallAware Keep the original targetdir in update mode
body: <p>I am using InstallAware to make a build and also to support web updates. In the installation process, for the first time, user is allowed to choose the destination folder. The system also supplies the default value. </p>
  
  <p>Everything is working fine until a user chooses his custom folder instead of default one. On the update mode, the setup installs application in the default target directory instead of the user-chosen one. As documentation from InstallAware, the update mode will first uninstall the application and then install it again. Because I run the update in silent mode, the installer will get the default value.</p>
  
  <p>How can I make it install in the original destination?</p>