fixed UI issues w.r.t. nature
diff --git a/plugins/org.eclipse.app4mc.amalthea.nature/src/org/eclipse/app4mc/amalthea/nature/AmaltheaNoLoadNature.java b/plugins/org.eclipse.app4mc.amalthea.nature/src/org/eclipse/app4mc/amalthea/nature/AmaltheaNoLoadNature.java
index 01dd426..af766a9 100644
--- a/plugins/org.eclipse.app4mc.amalthea.nature/src/org/eclipse/app4mc/amalthea/nature/AmaltheaNoLoadNature.java
+++ b/plugins/org.eclipse.app4mc.amalthea.nature/src/org/eclipse/app4mc/amalthea/nature/AmaltheaNoLoadNature.java
@@ -17,22 +17,28 @@
 
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
+import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
 import org.eclipse.app4mc.amalthea.sphinx.AmaltheaMetaModelDescriptor;
 import org.eclipse.app4mc.amalthea.sphinx.AmaltheaWorkspaceEditingDomainMapping;
 import org.eclipse.core.resources.IContainer;
+import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IProjectNature;
 import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.NullProgressMonitor;
 import org.eclipse.emf.common.util.EList;
 import org.eclipse.emf.ecore.resource.Resource;
 import org.eclipse.emf.ecore.resource.ResourceSet;
 import org.eclipse.emf.transaction.TransactionalEditingDomain;
 import org.eclipse.sphinx.emf.metamodel.IMetaModelDescriptor;
+import org.eclipse.sphinx.emf.util.EcorePlatformUtil;
 import org.eclipse.sphinx.emf.workspace.domain.WorkspaceEditingDomainManager;
+import org.eclipse.ui.IEditorInput;
 import org.eclipse.ui.IEditorPart;
 import org.eclipse.ui.IEditorReference;
 import org.eclipse.ui.IWorkbenchPage;
@@ -97,6 +103,8 @@
 			}
 
 			if (editingDomainMapping instanceof AmaltheaWorkspaceEditingDomainMapping) {
+				
+				List<IFile> filesInEditingDomain=new ArrayList<>();
 
 				Map<IMetaModelDescriptor, HashMap<IContainer, TransactionalEditingDomain>> map = ((AmaltheaWorkspaceEditingDomainMapping) editingDomainMapping).mappedEditingDomains;
 
@@ -109,27 +117,44 @@
 						if (iContainer.getProject() == project) {
 
 							TransactionalEditingDomain transactionalEditingDomain = hashMap.get(iContainer);
-
 							ResourceSet resourceSet = transactionalEditingDomain.getResourceSet();
 							EList<Resource> resources = resourceSet.getResources();
-							resources.forEach(resource -> {
-								resource.unload();
-							});
-							resourceSet.getResources().clear();
+
+							for (Resource resource : resources) {
+								IFile file = EcorePlatformUtil.getFile(resource);
+								filesInEditingDomain.add(file);
+							}
+							
+							EcorePlatformUtil.unloadResources(transactionalEditingDomain, resources, true, new NullProgressMonitor());
+
+//							resources.forEach(resource -> {
+//								resource.unload();
+//							});
+//							resourceSet.getResources().clear();
 						}
 
 					}
 				}
 
 				IWorkbenchPage activePage = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
+
 				IEditorReference[] editorReferences = activePage.getEditorReferences();
 
 				for (IEditorReference iEditorReference : editorReferences) {
-					System.out.println(iEditorReference);
 					IEditorPart editor = iEditorReference.getEditor(true);
-
+					
 					if (editor != null) {
-						activePage.closeEditor(editor, true);
+						IEditorInput editorInput = editor.getEditorInput();
+						
+						if(editorInput!=null) {
+							IFile iFile = editorInput.getAdapter(IFile.class);
+							
+							if(filesInEditingDomain.contains(iFile)) {
+								activePage.closeEditor(editor, true);
+								
+							}
+							
+						}
 					}
 				}
 			}
diff --git a/plugins/org.eclipse.app4mc.amalthea.nature/src/org/eclipse/app4mc/amalthea/nature/decorators/ProjectDecorator.java b/plugins/org.eclipse.app4mc.amalthea.nature/src/org/eclipse/app4mc/amalthea/nature/decorators/ProjectDecorator.java
index b036b6c..2d12a45 100644
--- a/plugins/org.eclipse.app4mc.amalthea.nature/src/org/eclipse/app4mc/amalthea/nature/decorators/ProjectDecorator.java
+++ b/plugins/org.eclipse.app4mc.amalthea.nature/src/org/eclipse/app4mc/amalthea/nature/decorators/ProjectDecorator.java
@@ -28,7 +28,7 @@
 					
 					if (Arrays.asList(prevNatures).contains(AmaltheaNoLoadNature.ID) == true) {
 						
-						decoration.addPrefix("Amalthea-no-load-activated:  ");
+						decoration.addSuffix(" - Amalthea-no-load-activated");
 						
 						decoration.addOverlay(AmaltheaNaturePlugin.INSTANCE.getImageRegistry().getDescriptor(AmaltheaNaturePlugin.IMAGE_ID), IDecoration.TOP_LEFT);
 					}
@@ -38,7 +38,6 @@
 
 			}
 		}
-		System.out.println(element);
 	}
 
 	@Override
diff --git a/plugins/org.eclipse.app4mc.amalthea.sphinx.ui.editors/src/org/eclipse/app4mc/amalthea/sphinx/ui/editors/editor/ExtendedBasicTransactionalFormEditor.java b/plugins/org.eclipse.app4mc.amalthea.sphinx.ui.editors/src/org/eclipse/app4mc/amalthea/sphinx/ui/editors/editor/ExtendedBasicTransactionalFormEditor.java
index a9d64fd..d2de023 100644
--- a/plugins/org.eclipse.app4mc.amalthea.sphinx.ui.editors/src/org/eclipse/app4mc/amalthea/sphinx/ui/editors/editor/ExtendedBasicTransactionalFormEditor.java
+++ b/plugins/org.eclipse.app4mc.amalthea.sphinx.ui.editors/src/org/eclipse/app4mc/amalthea/sphinx/ui/editors/editor/ExtendedBasicTransactionalFormEditor.java
@@ -251,7 +251,7 @@
 								| NotHandledException e) {
 							e.printStackTrace();
 						}
-				} else if (open == 0) {
+				} else if (open == 0 || open ==-1) {
 					close(false);
 					return false;
 				}