Maven style builds (which use the maven integration plugin) do not load or respect .mvn/*.config.
This is not to be confused with a previous issue with Maven itself where -f could not find .mvn. That is freestyle builds work fine and even executing maven pre or post steps work fine.
An easy way to test this is to create a project with .mvn/jvm.config or .mvn/maven.config with some property defined like -DsomeProperty=true
Then set the goal to: