diff --git a/li.strolch.model/src/main/java/li/strolch/model/GroupedParameterizedElement.java b/li.strolch.model/src/main/java/li/strolch/model/GroupedParameterizedElement.java
index 7be822dfe..a9b1979c8 100644
--- a/li.strolch.model/src/main/java/li/strolch/model/GroupedParameterizedElement.java
+++ b/li.strolch.model/src/main/java/li/strolch/model/GroupedParameterizedElement.java
@@ -829,6 +829,19 @@ public abstract class GroupedParameterizedElement extends AbstractStrolchElement
 		return bag.removeParameter(paramKey);
 	}
 
+	@Override
+	public <U, T extends Parameter<U>> T removeRelation(String paramKey) {
+		assertNotReadonly();
+		if (this.parameterBagMap == null)
+			return null;
+		ParameterBag bag = this.parameterBagMap.get(BAG_RELATIONS);
+		if (bag == null) {
+			return null;
+		}
+
+		return bag.removeParameter(paramKey);
+	}
+
 	@Override
 	public <U, T extends Parameter<U>> T removeParameter(String bagKey, String paramKey) {
 		assertNotReadonly();
diff --git a/li.strolch.model/src/main/java/li/strolch/model/ParameterBagContainer.java b/li.strolch.model/src/main/java/li/strolch/model/ParameterBagContainer.java
index 77a0c8b56..c4d3ff34f 100644
--- a/li.strolch.model/src/main/java/li/strolch/model/ParameterBagContainer.java
+++ b/li.strolch.model/src/main/java/li/strolch/model/ParameterBagContainer.java
@@ -1491,6 +1491,17 @@ public interface ParameterBagContainer extends StrolchElement {
 	 */
 	<U, T extends Parameter<U>> T removeParameter(String paramKey);
 
+	/**
+	 * Removes the {@link Parameter} with the given paramKey from the {@link ParameterBag} with the key {@link
+	 * StrolchModelConstants#BAG_RELATIONS}
+	 *
+	 * @param paramKey
+	 * 		the key of the {@link Parameter} which is to be removed
+	 *
+	 * @return the removed {@link Parameter} or null if it did not exist
+	 */
+	<U, T extends Parameter<U>> T removeRelation(String paramKey);
+
 	/**
 	 * Removes the {@link Parameter} with the given paramKey from the {@link ParameterBag} with the given bagKey
 	 *