Index: C:/dev/maven/components/maven-project/src/test/java/org/apache/maven/project/artifact/MavenMetadataSourceTest.java
===================================================================
--- C:/dev/maven/components/maven-project/src/test/java/org/apache/maven/project/artifact/MavenMetadataSourceTest.java	(revision 379256)
+++ C:/dev/maven/components/maven-project/src/test/java/org/apache/maven/project/artifact/MavenMetadataSourceTest.java	(working copy)
@@ -10,6 +10,7 @@
 import org.apache.maven.project.injection.ModelDefaultsInjector;
 import org.codehaus.plexus.PlexusTestCase;
 
+import java.util.Arrays;
 import java.util.Map;
 
 public class MavenMetadataSourceTest
@@ -107,4 +108,55 @@
         assertEquals( "default scope NOT back-propagated to dependency.", Artifact.SCOPE_TEST, dep.getScope() );
     }
 
+    public void testExcludeDoesNotAffectAllDependencies()
+        throws Exception
+    {
+        String groupId = "org.apache.maven";
+        String artifactId = "maven-model";
+        String version = "1.0";
+
+        Dependency dep1 = new Dependency();
+
+        dep1.setGroupId( groupId );
+        dep1.setArtifactId( artifactId + "1" );
+        dep1.setVersion( version );
+        dep1.setExclusions( Arrays.asList( new String[] { "exclude1:exclude1" } ) );
+
+        Model model = new Model();
+
+        model.addDependency( dep1 );
+
+        Dependency dep2 = new Dependency();
+        dep2.setGroupId( groupId );
+        dep2.setArtifactId( artifactId + "2" );
+        dep1.setVersion( version );
+
+        model.addDependency( dep2 );
+
+        MavenProject project = new MavenProject( model );
+
+        ModelDefaultsInjector injector = (ModelDefaultsInjector) lookup( ModelDefaultsInjector.ROLE );
+
+        injector.injectDefaults( model );
+
+        ArtifactFactory factory = (ArtifactFactory) lookup( ArtifactFactory.ROLE );
+
+        project.setArtifacts( project.createArtifacts( factory, null, null ) );
+
+        String key = ArtifactUtils.versionlessKey( groupId, artifactId );
+
+        Map artifactMap = project.getArtifactMap();
+
+        assertNotNull( "artifact-map should not be null.", artifactMap );
+        assertEquals( "artifact-map should contain 1 element.", 1, artifactMap.size() );
+
+        Artifact artifact = (Artifact) artifactMap.get( key );
+
+        assertNotNull( "dependency artifact not found in map.", artifact );
+        assertEquals( "dependency artifact has wrong scope.", Artifact.SCOPE_TEST, artifact.getScope() );
+
+        //check for back-propagation of default scope.
+        assertEquals( "default scope NOT back-propagated to dependency.", Artifact.SCOPE_TEST, dep1.getScope() );
+    }
+
 }