Maven filtering in IDEA 10.5.2: settings.localRepository is not substituted

Hi,
I have the following in my pom.xml defined:

        <testResources>
            <testResource>
                <directory>src/test/resources</directory>
                <filtering>true</filtering>
            </testResource>
        </testResources>

I have my.properties file in src/test/resources with the following content:

myproperty=${settings.localRepository}/blabla

my.properties file is read by several unit tests. If I execute tests with Maven from the command line, everything works and ${settings.localRepository} is substituted correctly. If I run the same test from IntelliJ IDEA, ${settings.localRepository} is not substituted. Everyother property like ${project.version}, ${project.build.directory} are substituted by IDEA without problems, but not ${settings.localRepository}.
What is the problem there?

Best regards,
Sergiy