On Jenkins v2.42 using NodeJS v1.0 plugin, NodeJS installation configuration entered via the Global Tools Configuration UI ($JENKINS_HOME/configureTools/) is only persisted in-memory and not to file so when Jenkins is restarted, the configuration is lost.

No errors are seen in the log. I've also tried manually uploading existing config file from a previous version but doesn't help.

Uninstalled v1.0 and installed v0.2.2 on same test CentOS instance and nodejs.xml persisted fine.