diff --git a/org.fortiss.tooling.base/trunk/src/org/fortiss/tooling/base/utils/.ratings b/org.fortiss.tooling.base/trunk/src/org/fortiss/tooling/base/utils/.ratings
index c97f0de641af1e2cdbbabf15709b227663c7d57e..4518ae281d5a766c54a7eaa19c75f9ff9ac640ff 100644
--- a/org.fortiss.tooling.base/trunk/src/org/fortiss/tooling/base/utils/.ratings
+++ b/org.fortiss.tooling.base/trunk/src/org/fortiss/tooling/base/utils/.ratings
@@ -7,7 +7,7 @@ DimensionUtils.java 8508de2b017f5ae76a86cdd0df7ce64a0a5f096e GREEN
 EllipseLayoutUtils.java e5f4f8eac4e4755c84d43a231d346ba348a5d806 GREEN
 LayoutDataUtils.java ee3798cb83903737f146ab1efe22ce667fbbc730 GREEN
 LayoutModelElementFactory.java cf1e7a5b23ae33087e0b8ccf32c37435bc3409fe GREEN
-MigrationUtils.java 549105d77987a4efd5a2bdb9972875cea83aa43e GREEN
+MigrationUtils.java 14f792317241963d077a0145c5fe3fe1dfcbf54c YELLOW
 OffsetOrientationUtils.java d7afdad0ee75667e04eb4b76e94216dd1ae93070 GREEN
 PointUtils.java 63c055e7c6062c564ceb5d900f3edce15384efc8 GREEN
 PointsUtils.java 5c134ea1a85d290b81634567def23b2f44e0f2ba GREEN
diff --git a/org.fortiss.tooling.base/trunk/src/org/fortiss/tooling/base/utils/MigrationUtils.java b/org.fortiss.tooling.base/trunk/src/org/fortiss/tooling/base/utils/MigrationUtils.java
index 539323a3c88e92e6335ffb50c8fc0f0ea0602176..31cfcf98770cc65538a21146aee8afe14a14bb25 100644
--- a/org.fortiss.tooling.base/trunk/src/org/fortiss/tooling/base/utils/MigrationUtils.java
+++ b/org.fortiss.tooling.base/trunk/src/org/fortiss/tooling/base/utils/MigrationUtils.java
@@ -21,9 +21,11 @@ import static org.fortiss.tooling.kernel.utils.EcoreUtils.copy;
 import org.eclipse.emf.common.util.BasicEList;
 import org.eclipse.emf.common.util.EList;
 import org.fortiss.tooling.base.model.base.ConnectorBase;
+import org.fortiss.tooling.base.model.base.HierarchicElementBase;
 import org.fortiss.tooling.base.model.element.IAnnotatedSpecification;
 import org.fortiss.tooling.base.model.element.IConnection;
 import org.fortiss.tooling.base.model.element.IConnector;
+import org.fortiss.tooling.base.model.element.IHierarchicElement;
 import org.fortiss.tooling.base.model.element.IModelElement;
 import org.fortiss.tooling.base.model.element.IModelElementReference;
 import org.fortiss.tooling.base.model.element.IModelElementSpecification;
@@ -66,6 +68,30 @@ public class MigrationUtils { // NO_UCD
 		delete(oldConnectorBase);
 	}
 
+	/**
+	 * Migrates an {@code oldConnectorBase} (of an (old) concrete sub-type of {@link ConnectorBase})
+	 * to a {@code newConnectorBase} (of another (new) concrete sub-type of {@link ConnectorBase} )
+	 * that is owned by the given new {@link IHierarchicElement},
+	 * including all relevant attributes and children.
+	 * 
+	 * @param oldConnectorBase
+	 *            Old {@link ConnectorBase} to be migrated. Side effect: Removed from the model and
+	 *            deleted.
+	 * @param newConnectorBase
+	 *            New {@link ConnectorBase} which should replace {@code oldConnectorBase}. It must
+	 *            be created by the caller of this method.
+	 * @param newElement
+	 *            Element that will own the {@code newConnectorBase}.
+	 */
+	public static void migrateConnectorBase(ConnectorBase oldConnectorBase,
+			ConnectorBase newConnectorBase, IHierarchicElement newElement) {
+
+		migrateINamedCommentedElement(oldConnectorBase, newConnectorBase);
+		migrateILayoutedModelElement(oldConnectorBase, newConnectorBase);
+		migrateIModelElement(oldConnectorBase, newConnectorBase);
+		newElement.getConnectors().add(newConnectorBase);
+	}
+
 	/**
 	 * Migrates all properties defined in the {@link IConnector} interface from
 	 * {@code oldIConnector} to {@code newIConnector}.
@@ -169,6 +195,14 @@ public class MigrationUtils { // NO_UCD
 		newINamedCommentedElement.setComment(oldINamedCommentedElement.getComment());
 	}
 
+	/** Migrates an {@link HierarchicElementBase} to an new {@link HierarchicElementBase}. */
+	public static void migrateHierarchicElementBase(HierarchicElementBase oldElement,
+			HierarchicElementBase newElement) {
+		migrateIModelElement(oldElement, newElement);
+		migrateILayoutedModelElement(oldElement, newElement);
+		migrateINamedCommentedElement(oldElement, newElement);
+	}
+
 	/**
 	 * Migrates all properties defined in the {@link IAnnotatedSpecification} interface from
 	 * {@code oldIAnnotatedSpecification} to {@code newIAnnotatedSpecification}.