Filtering fails for command line properties

When passing a property on the command line to maven using -D it does not properly override values passed to filters.

I have attached a sample project that defines a property in the pom.xml called 'filtered' This property is used as a filter in the filtered.properties file in src/main/filtered/filtered.properties. I have also included a test that gets passed the filtered property as a System property via the surefire plugin. It then loaded the filtered.properties file and tests to ensure the filters match.

The tests pass when run as

mvn test

BUT if I run as

mvn -Dfiltered=from-cmd-line teset

They fail.

I have also included the antrun plugin print its perspective on the value of the property.