uniqueVersion not inherited in child projects

My parent project defines the following:

<distributionManagement>
<snapshotRepository>
<id>Yo</id>
<name>Yo Repository</name>
<url>scp://yo/home/maven/www</url>
<uniqueVersion>false</uniqueVersion>
</snapshotRepository>
</distributionManagement>

When I run the following command in the child project:

mvn help:effective-pom

I get the following results:

...
<distributionManagement>
<snapshotRepository>
<id>Yo</id>
<name>Yo Repository</name>
<url>scp://yo/home/maven/www</url>
</snapshotRepository>
</distributionManagement>
...

It looks like inheritence is ignoring the <uniqueVersion> element.

This is also verified, when I run "mvn deploy" – the parent project installs a non-timestamped version in the remote repository, but the child project installs a timestamped version.