--- a/app/controller/grid/Status.js	Tue Dec 15 08:50:49 2015 +0100
+++ b/app/controller/grid/Status.js	Wed Dec 16 09:49:09 2015 +0100
@@ -21,7 +21,6 @@
             'statusgrid': {
                 edit: this.gridSave,
                 canceledit: this.cancelEdit,
-                select: this.toggleAllowedPermissions
             },
             'statusgrid button[action=add]': {
                 click: this.add
@@ -82,39 +81,31 @@
 
     /**
      * This function adds a new row to add a Status
+     *  and copies the data of the previous status into the new one
+     *  if possible.
      */
      add: function(button) {
-        var record = Ext.create('Lada.model.Status', {
-            messungsId: button.up('statusgrid').recordId
-        });
-        //Set the Date
-        record.data.datum = new Date();
         var lastrow = button.up('statusgrid').store.count()
-        button.up('statusgrid').store.insert(lastrow, record);
-        button.up('statusgrid').rowEditing.startEdit(lastrow, 1);
-    },
 
 
-    /**
-     * When a row in a grid is selected,
-     * this function checks if the row may be edited,
-     * or if the row can be removed
-     */
-    toggleAllowedPermissions: function(context, record, index){
-
-        //retrieve the readOnly parameters
-        var statusEdit = context.view.up('window').record.get('statusEdit');
+        //If possible copy the previous record into the new one.
+        //this assumes the store is ordered correctly, most recent status last.
+        if (lastrow > 0) {
+            //clone the old one
+            var recentStatus = button.up('statusgrid').store.getAt(lastrow-1);
+            var record = recentStatus.copy()
+            record.set('id', null);
+        } else {
+            //create a new one
+            var record = Ext.create('Lada.model.Status', {
+                messungsId: button.up('statusgrid').recordId
+            });
+        }
 
-        var grid = context.view.up('grid');
-
-        //retrieve the last record of the store
-        var lastRecord = context.getStore().last();
+        //Set the Date
+        record.set('datum', new Date());
 
-        //Check if edit is allowed
-        if (lastRecord != record ||
-            statusEdit === false) {
-            grid.getPlugin('rowedit').cancelEdit();
-        }
+        button.up('statusgrid').store.insert(lastrow, record);
+        button.up('statusgrid').getPlugin('rowedit').startEdit(lastrow, 1);
     }
-
 });

--- a/app/view/grid/Status.js	Tue Dec 15 08:50:49 2015 +0100
+++ b/app/view/grid/Status.js	Wed Dec 16 09:49:09 2015 +0100
@@ -37,8 +37,22 @@
         this.rowEditing = Ext.create('Ext.grid.plugin.RowEditing', {
             clicksToMoveEditor: 1,
             autoCancel: false,
-            disabled: true,
-            pluginId: 'rowedit'
+            disabled: true, //has no effect... but why?
+            pluginId: 'rowedit',
+            listeners: {
+                beforeedit: function(editor, context, eOpts) {
+                    if (context.record.get('id') ||
+                        ! context.grid.up('window').record.get('statusEdit')) {
+                    //Check if edit is allowed, this is true, when the selected
+                    // Record has an id (=is not new)
+                    // or is not allowed to add records.
+
+                        return false;
+                    }
+
+
+                }
+            }
         });
         this.plugins = [this.rowEditing];
 
@@ -147,11 +161,16 @@
             this.store.removeAll();
         }
         else {
-            this.store = Ext.create('Lada.store.Status');
+            this.store = Ext.create('Lada.store.Status',{
+                sorters: [{
+                    property: 'datum',
+                    direction: 'ASC'
+                }]
+            });
         }
         this.store.load({
             params: {
-                messungsId: this.recordId
+                messungsId: this.recordId,
             }
         });
     },