The Tomcat update installer places the 8.5.4 version Apache Tomcat under the OM Web Viewer installation folder. This will not replace the existing Apache Tomcat files.
It will copy the OM Web Viewer WAR files and associated application folders from the current Tomcat's webapps folder.
IMPORTANT: The update installer only preserves the Apache Tomcat port number customization. If any additional Apache Tomcat customization (such as SSL has been performed, these must be done again for the new Tomcat.