diff --git a/repository/OpenPonk-ClassEditor/OPTUmlAutoAccomodatingShape.trait.st b/repository/OpenPonk-ClassEditor/OPTUmlAutoAccomodatingShape.trait.st
index b36f90ac..7209b1a1 100644
--- a/repository/OpenPonk-ClassEditor/OPTUmlAutoAccomodatingShape.trait.st
+++ b/repository/OpenPonk-ClassEditor/OPTUmlAutoAccomodatingShape.trait.st
@@ -13,7 +13,7 @@ OPTUmlAutoAccomodatingShape >> accomodateContents [
 		                                 encompassingRectangle.
 	extentOfContents := self extentToFitContents max: self minExtent.
 	self roassalShape extent: extentOfContents.
-	(originalEncompassingRectangle height closeTo: extentOfContents y) 
+	(originalEncompassingRectangle height closeTo: extentOfContents y)
 		ifTrue: [ ^ self ].
 	self roassalShape translateTo: self roassalShape position x
 		@
diff --git a/repository/OpenPonk-ClassEditor/OPTUmlBaseController.trait.st b/repository/OpenPonk-ClassEditor/OPTUmlBaseController.trait.st
index ebc7ca27..cef7a188 100644
--- a/repository/OpenPonk-ClassEditor/OPTUmlBaseController.trait.st
+++ b/repository/OpenPonk-ClassEditor/OPTUmlBaseController.trait.st
@@ -12,7 +12,7 @@ OPTUmlBaseController >> descriptionAccessor: aSymbol [
 		  read: [ :me | me model perform: aSymbol ]
 		  write: [ :me :newValue |
 			  me model perform: (aSymbol , ':') asSymbol with: newValue.
-			  self diagramElement modelChanged ]
+			  self modelChanged ]
 ]
 
 { #category : 'forms' }
@@ -22,18 +22,18 @@ OPTUmlBaseController >> descriptionComment [
 	^ MAMemoDescription new
 		  required: false;
 		  accessor: (MAPluggableAccessor
-				   read: [ :me | 
+				   read: [ :me |
 					   me model ownedComments
 						   ifEmpty: [ '' ]
 						   ifNotEmpty: [ :oc | oc first body asString ] ]
-				   write: [ :me :newValue | 
+				   write: [ :me :newValue |
 					   newValue asString
 						   ifEmpty: [ me model ownedComments: OrderedCollection new ]
-						   ifNotEmpty: [ 
-							   me model ownedComments ifEmpty: [ 
+						   ifNotEmpty: [
+							   me model ownedComments ifEmpty: [
 									   me model ownedComments add: OPUMLComment new ].
 							   me model ownedComments first body: newValue asString ].
-					   self diagramElement modelChanged ]);
+					   self modelChanged ]);
 		  label: 'Comment';
 		  priority: 100;
 		  lineCount: 10;
@@ -66,7 +66,7 @@ OPTUmlBaseController >> descriptionVisibility [
 
 	<magritteDescription>
 	^ MASingleOptionDescription new
-		  optionsAndLabels: { 
+		  optionsAndLabels: {
 				  (nil -> '').
 				  (OPUMLVisibilityKind public -> 'public').
 				  (OPUMLVisibilityKind protected -> 'protected').
@@ -75,9 +75,9 @@ OPTUmlBaseController >> descriptionVisibility [
 		  reference: MAStringDescription new;
 		  accessor: (MAPluggableAccessor
 				   read: [ :me | me model visibility ]
-				   write: [ :me :newValue | 
+				   write: [ :me :newValue |
 					   me model visibility: newValue.
-					   self diagramElement modelChanged ]);
+					   self modelChanged ]);
 		  label: 'Visibility';
 		  priority: 8;
 		  beSorted;
diff --git a/repository/OpenPonk-ClassEditor/OPTUmlStereotypedElementController.trait.st b/repository/OpenPonk-ClassEditor/OPTUmlStereotypedElementController.trait.st
index 8ddce087..273a39fd 100644
--- a/repository/OpenPonk-ClassEditor/OPTUmlStereotypedElementController.trait.st
+++ b/repository/OpenPonk-ClassEditor/OPTUmlStereotypedElementController.trait.st
@@ -44,7 +44,7 @@ OPTUmlStereotypedElementController >> descriptionStereotypeContent [
 								   applyStereotype:
 									   (stereotypes detect: [ :each | each name = newValue ])
 								   to: me model ].
-					   me diagramElement modelChanged ]);
+					   me modelChanged ]);
 		  label: 'Stereotype';
 		  priority: 4;
 		  yourself
diff --git a/repository/OpenPonk-ClassEditor/OPUmlAbstractAssociationController.class.st b/repository/OpenPonk-ClassEditor/OPUmlAbstractAssociationController.class.st
index 71df2000..ce19975c 100644
--- a/repository/OpenPonk-ClassEditor/OPUmlAbstractAssociationController.class.st
+++ b/repository/OpenPonk-ClassEditor/OPUmlAbstractAssociationController.class.st
@@ -6,12 +6,30 @@ Class {
 	#tag : 'Controllers'
 }
 
+{ #category : 'announcements' }
+OPUmlAbstractAssociationController >> classAttributeChanged [
+
+	super modelChanged
+]
+
 { #category : 'accessing' }
 OPUmlAbstractAssociationController >> elementsToShowInside [
 
 	^ super elementsToShowInside , self model memberEnds
 ]
 
+{ #category : 'announcements' }
+OPUmlAbstractAssociationController >> modelChanged [
+
+	super modelChanged.
+	self model memberEnds
+		select: [ :each | each owningClass isNotNil ]
+		thenDo: [ :each |
+			self diagramController
+				controllerForModel: each
+				ifFound: [ :controller | controller associationChanged ] ]
+]
+
 { #category : 'accessing' }
 OPUmlAbstractAssociationController >> modelSource [
 
diff --git a/repository/OpenPonk-ClassEditor/OPUmlAssociationController.class.st b/repository/OpenPonk-ClassEditor/OPUmlAssociationController.class.st
index dfd4d7a1..9cf06b61 100644
--- a/repository/OpenPonk-ClassEditor/OPUmlAssociationController.class.st
+++ b/repository/OpenPonk-ClassEditor/OPUmlAssociationController.class.st
@@ -22,10 +22,10 @@ OPUmlAssociationController >> descriptionActionSwitchSourceTarget [
 	self canSwitchSourceAndTarget ifFalse: [ ^ self ].
 	description := OPMAActionDescription new.
 	description
-		action: [ 
+		action: [
 			self switchSourceAndTarget.
 			self diagramController editor openFormOn: self.
-			self diagramElement modelChanged ];
+			self modelChanged ];
 		label: 'Switch source/target';
 		priority: 9.05.
 	^ description
diff --git a/repository/OpenPonk-ClassEditor/OPUmlAttributeController.class.st b/repository/OpenPonk-ClassEditor/OPUmlAttributeController.class.st
index 87f24f07..5576d89a 100644
--- a/repository/OpenPonk-ClassEditor/OPUmlAttributeController.class.st
+++ b/repository/OpenPonk-ClassEditor/OPUmlAttributeController.class.st
@@ -15,6 +15,12 @@ OPUmlAttributeController >> addDiagramElementToOwner [
 	self ownerDiagramElement addAttribute: self diagramElement
 ]
 
+{ #category : 'announcements' }
+OPUmlAttributeController >> associationChanged [
+
+	super modelChanged
+]
+
 { #category : 'figures' }
 OPUmlAttributeController >> createDiagramElement [
 
@@ -63,7 +69,7 @@ OPUmlAttributeController >> descriptionDefaultValue [
 						   ifTrue: [
 							   me model defaultValue bodies:
 									   (newValue ifEmpty: [ {  } ] ifNotEmpty: [ { newValue } ]) ].
-					   self diagramElement modelChanged ]);
+					   self modelChanged ]);
 		  label: 'Default Value';
 		  priority: 42;
 		  yourself
@@ -118,12 +124,12 @@ OPUmlAttributeController >> descriptionMultiplicity [
 		  options: #( '0..1' '1..1' '0..*' '1..*' );
 		  reference: MAStringDescription new;
 		  accessor: (MAPluggableAccessor
-				   read: [ :me | 
+				   read: [ :me |
 					   me model lowerBound asString , '..'
 					   , me model upperBound asString ]
-				   write: [ :me :newValue | 
+				   write: [ :me :newValue |
 					   self writeMultiplicityFrom: newValue to: me model.
-					   self diagramElement modelChanged ]);
+					   self modelChanged ]);
 		  label: 'Multiplicity';
 		  priority: 9;
 		  beSorted;
@@ -137,11 +143,11 @@ OPUmlAttributeController >> descriptionType [
 	^ MAStringDescription new
 		  accessor: (MAPluggableAccessor
 				   read: [ :me | me model type ifNil: [ '' ] ifNotNil: #name ]
-				   write: [ :me :newValue | 
+				   write: [ :me :newValue |
 					   newValue
 						   ifEmpty: [ me model type: nil ]
 						   ifNotEmpty: [ me model type: (self typeNamed: newValue) ].
-					   self diagramElement modelChanged ]);
+					   self modelChanged ]);
 		  label: 'Type';
 		  priority: 5;
 		  yourself
@@ -153,6 +159,16 @@ OPUmlAttributeController >> diagramElementClass [
 	^ OPUmlAttributeLabel
 ]
 
+{ #category : 'announcements' }
+OPUmlAttributeController >> modelChanged [
+
+	super modelChanged.
+	self model association ifNotNil: [ :association |
+		self diagramController
+			controllerForModel: association
+			ifFound: [ :controller | controller classAttributeChanged ] ]
+]
+
 { #category : 'accessing' }
 OPUmlAttributeController >> modelClass [
 	^ OPUMLProperty
diff --git a/repository/OpenPonk-ClassEditor/OPUmlClassController.class.st b/repository/OpenPonk-ClassEditor/OPUmlClassController.class.st
index 29e43333..212a09c2 100644
--- a/repository/OpenPonk-ClassEditor/OPUmlClassController.class.st
+++ b/repository/OpenPonk-ClassEditor/OPUmlClassController.class.st
@@ -59,7 +59,7 @@ OPUmlClassController >> createAttributeAdornmentBy: builder [
 		self diagramController editor palette selectTool: tool.
 		tool whenCreated: [ :ctrl |
 			OPRenameElementCommand executeOn: ctrl.
-			ctrl diagramElement modelChanged ].
+			ctrl modelChanged ].
 		tool selectedControllers: { self } ]
 ]
 
diff --git a/repository/OpenPonk-ClassEditor/OPUmlClassShape.class.st b/repository/OpenPonk-ClassEditor/OPUmlClassShape.class.st
index ca0d8e08..8f8e5e63 100644
--- a/repository/OpenPonk-ClassEditor/OPUmlClassShape.class.st
+++ b/repository/OpenPonk-ClassEditor/OPUmlClassShape.class.st
@@ -35,7 +35,7 @@ OPUmlClassShape >> addAttribute: anAttributeShape [
 { #category : 'rendering' }
 OPUmlClassShape >> addOperation: anOperationShape [
 
-	operations ifNil: [ 
+	operations ifNil: [
 		operations := OPUmlFeaturesListCompartment in: self.
 
 		self sortOwnedElements ].
diff --git a/repository/OpenPonk-ClassEditor/OPUmlClassifierController.class.st b/repository/OpenPonk-ClassEditor/OPUmlClassifierController.class.st
index d311c16a..f47e0611 100644
--- a/repository/OpenPonk-ClassEditor/OPUmlClassifierController.class.st
+++ b/repository/OpenPonk-ClassEditor/OPUmlClassifierController.class.st
@@ -50,9 +50,9 @@ OPUmlClassifierController >> descriptionName [
 	| accessor |
 	accessor := MAPluggableAccessor
 		            read: [ :me | me model name ]
-		            write: [ :me :newValue | 
+		            write: [ :me :newValue |
 			            me model name: newValue.
-			            self diagramElement modelChanged ].
+			            self modelChanged ].
 	^ MAMemoDescription new
 		  accessor: accessor;
 		  label: 'Name';
diff --git a/repository/OpenPonk-ClassEditor/OPUmlClassifierItemController.class.st b/repository/OpenPonk-ClassEditor/OPUmlClassifierItemController.class.st
index 737cb593..c363dfdc 100644
--- a/repository/OpenPonk-ClassEditor/OPUmlClassifierItemController.class.st
+++ b/repository/OpenPonk-ClassEditor/OPUmlClassifierItemController.class.st
@@ -33,7 +33,7 @@ OPUmlClassifierItemController >> descriptionName [
 		| text |
 		text := newValue trim ifEmpty: [ self placeholderName ].
 		me model name: text.
-		self diagramElement modelChanged ].
+		self modelChanged ].
 	^ description
 ]
 
diff --git a/repository/OpenPonk-ClassEditor/OPUmlCompartmentableShape.class.st b/repository/OpenPonk-ClassEditor/OPUmlCompartmentableShape.class.st
index e42c860d..edb0044d 100644
--- a/repository/OpenPonk-ClassEditor/OPUmlCompartmentableShape.class.st
+++ b/repository/OpenPonk-ClassEditor/OPUmlCompartmentableShape.class.st
@@ -92,12 +92,11 @@ OPUmlCompartmentableShape >> layoutSeparators [
 ]
 
 { #category : 'as yet unclassified' }
-OPUmlCompartmentableShape >> ownedElement: aShape renderedIn: aCanvas [
+OPUmlCompartmentableShape >> recursivelyOwnedElement: aShape renderedIn: aCanvas [
 
-	| wasRendered |
-	wasRendered := self isRenderedWithOwnedElements.
-	super ownedElement: aShape renderedIn: aCanvas.
-	wasRendered ifTrue: [ self updateRenderFromModel ]
+	super recursivelyOwnedElement: aShape renderedIn: aCanvas.
+	self isRenderedWithOwnedElements ifTrue: [
+		self updateRenderFromModel ]
 ]
 
 { #category : 'removing' }
diff --git a/repository/OpenPonk-ClassEditor/OPUmlPackageDiagramController.class.st b/repository/OpenPonk-ClassEditor/OPUmlPackageDiagramController.class.st
index a6f15f7e..0d4bcff6 100644
--- a/repository/OpenPonk-ClassEditor/OPUmlPackageDiagramController.class.st
+++ b/repository/OpenPonk-ClassEditor/OPUmlPackageDiagramController.class.st
@@ -136,7 +136,7 @@ OPUmlPackageDiagramController >> descriptionAppliedProfiles [
 										    OPUMLProfileApplication new appliedProfile:
 												    each yourself ]).
 					   self rebuildPalette.
-					   self diagramElement modelChanged ]);
+					   self modelChanged ]);
 		  label: 'Applied Profiles';
 		  priority: 10;
 		  beSorted;
@@ -308,47 +308,47 @@ OPUmlPackageDiagramController >> initializePalette: aPalette [
 OPUmlPackageDiagramController >> initializeProfile: aProfile palette: aPalette [
 
 	| stereotypes elements relationships isForRelationship isForClass |
-	stereotypes := (aProfile ownedStereotype reject: #isAbstract) 
+	stereotypes := (aProfile ownedStereotype reject: #isAbstract)
 		               sorted: [ :a :b | a name < b name ].
-	isForRelationship := [ :attr | 
+	isForRelationship := [ :attr |
 	                     (OPUMLXMISpecsStorage metaClassNamed:
-		                      attr type name) allParents anySatisfy: [ 
+		                      attr type name) allParents anySatisfy: [
 		                     :parent | parent name = 'Relationship' ] ].
-	isForClass := [ :attr | 
+	isForClass := [ :attr |
 	              | metaclass |
 	              metaclass := OPUMLXMISpecsStorage metaClassNamed:
 		                           attr type name.
-	              metaclass name = 'Class' or: [ 
-		              metaclass allParents anySatisfy: [ :parent | 
+	              metaclass name = 'Class' or: [
+		              metaclass allParents anySatisfy: [ :parent |
 			              parent name = 'Class' ] ] ].
-	elements := stereotypes select: [ :each | 
-		            each allAttributes anySatisfy: [ :attr | 
-			            (attr name beginsWith: 'base_') and: [ 
+	elements := stereotypes select: [ :each |
+		            each allAttributes anySatisfy: [ :attr |
+			            (attr name beginsWith: 'base_') and: [
 				            isForClass value: attr ] ] ].
-	relationships := stereotypes select: [ :each | 
-		                 each allAttributes anySatisfy: [ :attr | 
-			                 (attr name beginsWith: 'base_') and: [ 
+	relationships := stereotypes select: [ :each |
+		                 each allAttributes anySatisfy: [ :attr |
+			                 (attr name beginsWith: 'base_') and: [
 				                 isForRelationship value: attr ] ] ].
 	elements ifNotEmpty: [ aPalette newSeparator ].
-	elements do: [ :stereotype | 
+	elements do: [ :stereotype |
 		(aPalette newCreationEntry: [ OPUmlClassController new ])
 			label: stereotype name;
 			icon: OPUmlIcons classIcon;
-			whenCreated: [ :ctrl | 
+			whenCreated: [ :ctrl |
 				ctrl model applyStereotype: stereotype implementationClass new.
 				ctrl model name: stereotype name.
-				ctrl diagramElement modelChanged.
+				ctrl modelChanged.
 				OPInitialSetElementCommand executeOn: ctrl.
-				ctrl diagramElement modelChanged ] ].
+				ctrl modelChanged ] ].
 	relationships ifNotEmpty: [ aPalette newSeparator ].
-	relationships do: [ :stereotype | 
-		(aPalette newConnectionCreationEntry: [ 
+	relationships do: [ :stereotype |
+		(aPalette newConnectionCreationEntry: [
 				 OPUmlAssociationController new ])
 			label: stereotype name;
 			icon: OPUmlIcons directedAssociationIcon;
-			whenCreated: [ :ctrl | 
+			whenCreated: [ :ctrl |
 				ctrl model applyStereotype: stereotype implementationClass new.
-				ctrl diagramElement modelChanged ] ]
+				ctrl modelChanged ] ]
 ]
 
 { #category : 'palette' }
diff --git a/repository/OpenPonk-ClassEditor/OPUmlPropertyMagritteDescriptions.class.st b/repository/OpenPonk-ClassEditor/OPUmlPropertyMagritteDescriptions.class.st
index 51d72b5b..e6c1d810 100644
--- a/repository/OpenPonk-ClassEditor/OPUmlPropertyMagritteDescriptions.class.st
+++ b/repository/OpenPonk-ClassEditor/OPUmlPropertyMagritteDescriptions.class.st
@@ -29,7 +29,7 @@ OPUmlPropertyMagritteDescriptions >> descriptionAccessor: aSymbol [
 			  (reader value: me)
 				  perform: (aSymbol , ':') asSymbol
 				  with: newValue.
-			  me ifNotNil: [ me diagramElement modelChanged ] ]
+			  me ifNotNil: [ me modelChanged ] ]
 ]
 
 { #category : 'descriptions' }
@@ -99,9 +99,9 @@ OPUmlPropertyMagritteDescriptions >> descriptionIsNavigable [
 	^ MABooleanDescription new
 		  accessor: (MAPluggableAccessor
 				   read: [ :me | (reader value: me) isNavigable ]
-				   write: [ :me :newValue | 
+				   write: [ :me :newValue |
 					   me writeNavigability: newValue to: (reader value: me).
-					   me diagramElement modelChanged ]);
+					   me modelChanged ]);
 		  label: 'Is Navigable';
 		  priority: 10;
 		  yourself
@@ -156,12 +156,12 @@ OPUmlPropertyMagritteDescriptions >> descriptionMultiplicity [
 		  options: #( '0..1' '1..1' '0..*' '1..*' );
 		  reference: MAStringDescription new;
 		  accessor: (MAPluggableAccessor
-				   read: [ :me | 
+				   read: [ :me |
 					   (reader value: me) lowerBound asString , '..'
 					   , (reader value: me) upperBound asString ]
-				   write: [ :me :newValue | 
+				   write: [ :me :newValue |
 					   me writeMultiplicityFrom: newValue to: (reader value: me).
-					   me diagramElement modelChanged ]);
+					   me modelChanged ]);
 		  label: 'Multiplicity';
 		  priority: 9;
 		  beSorted;
diff --git a/repository/OpenPonk-ClassEditor/OPUmlStereotypeDescriptions.class.st b/repository/OpenPonk-ClassEditor/OPUmlStereotypeDescriptions.class.st
index 4ed2a0d9..84114d85 100644
--- a/repository/OpenPonk-ClassEditor/OPUmlStereotypeDescriptions.class.st
+++ b/repository/OpenPonk-ClassEditor/OPUmlStereotypeDescriptions.class.st
@@ -21,7 +21,7 @@ OPUmlStereotypeDescriptions >> accessorFor: anAttribute of: aStereotype [
 			  aStereotype
 				  perform: (anAttribute name , ':') asSymbol
 				  with: newValue.
-			  controller diagramElement modelChanged ]
+			  controller modelChanged ]
 ]
 
 { #category : 'adding' }