Upgraded environment from Identity Governance 14.2.0 to 14.3.0.
Changes made prior to the upgrade:
Customized one property (mail.server) with its own smtp server (Administration > Settings > Property Settings).
After the upgrade, the property was restored to its default value: "smtp.company.com"
Release : 14.3
Component : CA IDENTITY SUITE (VIRTUAL APPLIANCE)
If the original DB properties were backed up compare the old and new properties file and adjust the parameters accordingly.