Upgrade from Oracle Empirica Signal release 9.1 or later

Perform these tasks to upgrade from Oracle Empirica Signal 9.1.0.x, 9.2.0.x, 9.2.1.x, or 9.2.2.x, 9.2.3 to 2025.4.01.

• Restore site-specific properties files
  To upgrade from Oracle Empirica Signal 9.1.0.x, 9.2.0.x, 9.2.1.x, 9.2.2.x, or 9.2.3.x to 2025.4.01, it is necessary to restore site-specific properties files.
• Preserve the Oracle WebLogic Server deployment files
  To upgrade Oracle Empirica Signal from 9.1.0.x, 9.2.0.x, 9.2.1.x, 9.2.2.x, or 9.2.3.x to 2025.4.01, perform this task.
• Preserve custom home pages, images, and release notes from a previous release (upgrade only)
  Perform these steps to preserve any customizations you made to previous releases and to copy Release Notes documents from previous releases.