diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/contexts/entities/ContextManagement.java b/src/main/java/org/gcube/informationsystem/resourceregistry/contexts/entities/ContextManagement.java
index 22e03ef..515298f 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/contexts/entities/ContextManagement.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/contexts/entities/ContextManagement.java
@@ -174,7 +174,7 @@ public class ContextManagement extends EntityElementManagement<Context> {
 			try {
 				IsParentOfManagement isParentOfManagement = new IsParentOfManagement(oDatabaseDocument);
 				isParentOfManagement.setElement(edge);
-				JsonNode isParentOf = isParentOfManagement.serializeAsJsonNode();
+				JsonNode isParentOf = isParentOfManagement.createCompleteJsonNode(true, false);
 				if(isParentOf!=null) {
 					((ObjectNode) context).replace(Context.PARENT_PROPERTY, isParentOf);
 				}
@@ -405,7 +405,7 @@ public class ContextManagement extends EntityElementManagement<Context> {
 			ContextManagement contextManagement = new ContextManagement();
 			contextManagement.setElement((OVertex) vertex);
 			try {
-				JsonNode jsonObject = contextManagement.createCompleteJsonNode();
+				JsonNode jsonObject = contextManagement.serializeAsJsonNode();
 				arrayNode.add(jsonObject);
 			} catch(ResourceRegistryException e) {
 				logger.error("Unable to correctly serialize {}. It will be excluded from results. {}",
diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/instances/base/ElementManagement.java b/src/main/java/org/gcube/informationsystem/resourceregistry/instances/base/ElementManagement.java
index 78a8596..32bcf8d 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/instances/base/ElementManagement.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/instances/base/ElementManagement.java
@@ -89,11 +89,7 @@ public abstract class ElementManagement<El extends OElement> {
 	protected JsonNode jsonNode;
 	protected OClass oClass;
 	protected String elementType;
-	
-	protected JsonNode self;
-	protected JsonNode complete;
-	
-	
+
 	protected El element;
 	protected boolean reload;
 	
@@ -297,10 +293,7 @@ public abstract class ElementManagement<El extends OElement> {
 	
 	public JsonNode serializeSelfAsJsonNode() throws ResourceRegistryException {
 		try {
-			if(self==null) {
-				self = createSelfJsonNode();
-			}
-			return self.deepCopy();
+			return createSelfJsonNode();
 		} catch(Exception e) {
 			throw new ResourceRegistryException(e);
 		}
@@ -310,10 +303,7 @@ public abstract class ElementManagement<El extends OElement> {
 	
 	public JsonNode serializeAsJsonNode() throws ResourceRegistryException {
 		try {
-			if(complete==null) {
-				complete = createCompleteJsonNode();
-			}
-			return complete;
+			return createCompleteJsonNode();
 		} catch(Exception e) {
 			throw new ResourceRegistryException(e);
 		}
@@ -416,8 +406,6 @@ public abstract class ElementManagement<El extends OElement> {
 			if(uuid == null) {
 				throw new NotFoundException("null UUID does not allow to retrieve the Element");
 			}
-			
-
 			return Utility.getElementByUUID(oDatabaseDocument, elementType == null ? accessType.getName() : elementType, uuid,
 					elementClass);
 		} catch(NotFoundException e) {
@@ -463,9 +451,7 @@ public abstract class ElementManagement<El extends OElement> {
 			}
 		}
 	}
-
 	
-
 	public boolean exists() throws NotFoundException, AvailableInAnotherContextException, ResourceRegistryException {
 		ODatabaseDocument current = ContextUtility.getCurrentODatabaseDocumentFromThreadLocal();
 		try {
@@ -682,8 +668,6 @@ public abstract class ElementManagement<El extends OElement> {
 			
 			if(current!=null) {
 				current.activateOnCurrentThread();
-				
-
 			}
 		}
 	}
@@ -730,8 +714,6 @@ public abstract class ElementManagement<El extends OElement> {
 	public ArrayNode getContextsAsArrayNode(ObjectMapper objectMapper) throws NotFoundException, ContextException, ResourceRegistryException {
 		try {
 			Set<String> contexts = getContextsSet();
-			
-
 			ArrayNode arrayNode = objectMapper.createArrayNode();
 			for(String contextUUID : contexts) {
 				arrayNode.add(contextUUID);
@@ -784,8 +766,6 @@ public abstract class ElementManagement<El extends OElement> {
 				return value.asBoolean();
 			
 			case NULL:
-				
-
 				break;
 			
 			case NUMBER:
@@ -831,9 +811,7 @@ public abstract class ElementManagement<El extends OElement> {
 		}
 		
 		Iterator<Entry<String,JsonNode>> fields = jsonNode.fields();
-
 		
-
 		OUTER_WHILE: while(fields.hasNext()) {
 			Entry<String,JsonNode> entry = fields.next();
 			
@@ -991,9 +969,7 @@ public abstract class ElementManagement<El extends OElement> {
 			if(object instanceof Collection) {
 				Collection<?> collection = (Collection<?>) object;
 				ArrayNode arrayNode = objectMapper.createArrayNode();
-
 				
-
 				for(Object o : collection) {
 					Object obj = getPropertyForJson("PLACEHOLDER", o);