--- a/app/model/Base.js	Fri Oct 31 21:07:39 2014 +0100
+++ b/app/model/Base.js	Fri Oct 31 21:10:35 2014 +0100
@@ -13,26 +13,20 @@
     extend: 'Ext.data.Model',
     requires: ['Lada.lib.Helpers'],
     /**
-     * Helper function to build an ID which is used in the proxy calls. This
-     * function is a workaround for
-     * https://roundup-intern.intevation.de/bfs/issue30
-     * as some items can not be identified with a singe id.
-     */
-    getEidi: function() {
-        return "/" + this.idProperty;
-    },
-    /**
      * Helper function to make a AJAX request against the authinfo interface
      * of the server
      * @param callback function(model, readonly, isowner)
      * @private
      */
-    getAuthInfo: function(cb) {
+    getAuthInfo: function(cb, probeId) {
+        if (!probeId) {
+            probeId = this.data.probeId;
+        }
         Ext.Ajax.request({
             scope: this,
-            url: 'server/rest/authinfo/' + this.data.probeId,
+            url: 'server/rest/authinfo/' + probeId,
             success: function(response, opts) {
-                var obj = Ext.decode(Ext.decode(response.responseText).data);
+                var obj = Ext.decode(response.responseText).data;
                 cb(this, obj.readonly, obj.isOwner);
             },
             failure: function(response, opts) {