### Eclipse Workspace Patch 1.0
#P org.sophie2.base.model.resources.r4
Index: src/main/java/org/sophie2/base/model/resources/r4/access/MasterTopAccess.java
===================================================================
--- src/main/java/org/sophie2/base/model/resources/r4/access/MasterTopAccess.java	(revision 8751)
+++ src/main/java/org/sophie2/base/model/resources/r4/access/MasterTopAccess.java	(working copy)
@@ -188,7 +188,7 @@
 		// TODO some checks for valid change, Security.
 		ResourceRevision newRevision = getHead().applyChange(change, revisionId);
 		if (!newRevision.equals(this.headRevision)) {
-			switchToNextRevision(newRevision); 
+			switchToRevision(newRevision); 
 		}
 	}
 
@@ -197,18 +197,24 @@
 	 * 
 	 * @param newRevision The revision to switch to.
 	 */
-	protected void switchToNextRevision(ResourceRevision newRevision) {
+	protected void switchToRevision(ResourceRevision newRevision) {
 		assert newRevision != null;
-		assert this.headRevision.getId().compareTo(newRevision.getId()) < 0 : 
-			"Cannot swith from rev " + this.headRevision.getId() + 
-			" to " + newRevision.getId() + "!";
-
-		ResourceRevision oldRevision = this.headRevision;
+		if (this.headRevision.getId().equals(newRevision.getId())) {
+			return;
+		}
+		ResourceRevision oldRevision = null;
+		ResourceRevision revision = null;
+		if( this.headRevision.getId().compareTo(newRevision.getId()) < 0) {
+			oldRevision = this.headRevision;
+			revision = newRevision;
+		} else {
+			oldRevision = newRevision;
+			revision = this.headRevision;
+		}
 
 		this.headRevision = newRevision;
 		this.headAspect.fireChanged(null);
 
-		ResourceRevision revision = newRevision;
 		while (oldRevision.getId().compareTo(revision.getId()) < 0) {
 			ChangeEffect effect = revision.getChangeEffect();
 
#P org.sophie2.base.connectivity
Index: src/main/java/org/sophie2/base/connectivity/resources/MasterServerAccess.java
===================================================================
--- src/main/java/org/sophie2/base/connectivity/resources/MasterServerAccess.java	(revision 8751)
+++ src/main/java/org/sophie2/base/connectivity/resources/MasterServerAccess.java	(working copy)
@@ -155,8 +155,8 @@
 			newRevision = newRevision.applyChange(change, revisionId);
 		}
 		
-		this.headRevision = revision; // TODO see how to notify properties
-		switchToNextRevision(newRevision); 
+		switchToRevision(revision);
+		switchToRevision(newRevision); 
 		this.syncInfo = this.syncInfo.setLastSyncRevision(newRevision.getId());
 	}