SystemD services disappeared since MariaDB update?

Since UPCP ran this morning, all my custom services loaded via systemctl have disappeared. The services themselves are not running, but the ".service" files are showing under "/etc/systemd/system" and the symlinks are also showing under "/etc/systemd/system/multi-user.target.wants". According to "/var/log/messages", all the services stopped when the MariaDB update was installed via YUM when UPCP ran. Any ideas what would cause that?