[logback-user] Multiple logback config files warning

We have different logback config files, one for testing and one for production. I just noticed a warning during a maven install that logback found multiple config files, one under target/test-classes and the other under target/classes. Is this a concern? Does logback use the first config file it finds and will it always find the test file first? If not, and I realize this is may be a maven question, how do I configure maven to only use the logback file under test-classes when running the unit tests as part of the maven install command? Thanks, --adam http://gordonizer.com