diff --git a/maven-model-builder/src/main/java/org/apache/maven/model/Processor.java b/maven-model-builder/src/main/java/org/apache/maven/model/Processor.java
index c75f669538..3d41ca4555 100644
--- a/maven-model-builder/src/main/java/org/apache/maven/model/Processor.java
+++ b/maven-model-builder/src/main/java/org/apache/maven/model/Processor.java
@@ -26,10 +26,6 @@ import org.apache.maven.model.Model;
 public interface Processor
 {
     void process( Object parent, Object child, Object target, boolean isChildMostSpecialized );
-
-    Object getParent();
-
-    Object getChild();
     
     List<Model> getParentModels();
 
diff --git a/maven-model-builder/src/main/java/org/apache/maven/model/interpolator/DefaultInterpolator.java b/maven-model-builder/src/main/java/org/apache/maven/model/interpolator/DefaultInterpolator.java
index e3822fec75..46b1ee648a 100644
--- a/maven-model-builder/src/main/java/org/apache/maven/model/interpolator/DefaultInterpolator.java
+++ b/maven-model-builder/src/main/java/org/apache/maven/model/interpolator/DefaultInterpolator.java
@@ -48,7 +48,7 @@ public class DefaultInterpolator
         
         if(properties == null)
         {
-        	return model;
+        	properties = new Properties();
         }
         
         List<InterpolatorProperty>  interpolatorProperties = new ArrayList<InterpolatorProperty>();
diff --git a/maven-model-builder/src/main/java/org/apache/maven/model/processors/BaseProcessor.java b/maven-model-builder/src/main/java/org/apache/maven/model/processors/BaseProcessor.java
index 1ceba9f289..e7cc8c9706 100644
--- a/maven-model-builder/src/main/java/org/apache/maven/model/processors/BaseProcessor.java
+++ b/maven-model-builder/src/main/java/org/apache/maven/model/processors/BaseProcessor.java
@@ -35,10 +35,6 @@ import org.apache.maven.model.Processor;
 public abstract class BaseProcessor implements Processor
 {
 
-    Object parent;
-
-    Object child;
-
     Collection<Processor> processors;
     
     private List<Model> parentModels;
@@ -75,8 +71,6 @@ public abstract class BaseProcessor implements Processor
             throw new IllegalArgumentException( "target: null" );
         }
 
-        this.parent = parent;
-        this.child = child;
         if(parent instanceof Model)
         {
         	parentModels.add( (Model) parent );
@@ -85,19 +79,8 @@ public abstract class BaseProcessor implements Processor
         {
             processor.process( parent, child, target, isChildMostSpecialized );
         }
-
     }
-
-    public Object getChild()
-    {
-        return child;
-    }
-
-    public Object getParent()
-    {
-        return parent;
-    }
-    
+  
     protected String normalizeUriWithRelativePath(String u, String artifactId, Model parent)
     {
     	if(u == null)