diff --git a/backgrid-select-all.js b/backgrid-select-all.js
index e2584e0..2b83a53 100644
--- a/backgrid-select-all.js
+++ b/backgrid-select-all.js
@@ -180,6 +180,7 @@
         if (_.keys(selectedModels).length === (collection.fullCollection|| collection).length) {
           this.checkbox().prop("checked", true);
         }
+        collection.trigger('backgrid:selection:updated');
       });
 
       this.listenTo(collection.fullCollection || collection, "remove", function (model) {
@@ -270,7 +271,10 @@
       var selectedModels = selectAllHeaderCell.selectedModels;
       var collection = this.collection.fullCollection || this.collection;
       for (var modelId in selectedModels) {
-        result.push(collection.get(modelId));
+        var model = collection.get(modelId);
+        if (model instanceof Backbone.Model) {
+          result.push(model);
+        }
       }
     }
 
diff --git a/backgrid-select-all.min.js b/backgrid-select-all.min.js
index ba8d996..34062f1 100644
--- a/backgrid-select-all.min.js
+++ b/backgrid-select-all.min.js
@@ -67,7 +67,7 @@ tagName:"th",/**
        @param {Backgrid.Column} options.column
        @param {Backbone.Collection} options.collection
     */
-initialize:function(a){this.column=a.column,this.column instanceof b.Column||(this.column=new b.Column(this.column));var d=this.collection,e=this.selectedModels={};this.listenTo(d.fullCollection||d,"backgrid:selected",function(a,b){b?e[a.id||a.cid]=1:(delete e[a.id||a.cid],this.checkbox().prop("checked",!1)),c.keys(e).length===(d.fullCollection||d).length&&this.checkbox().prop("checked",!0)}),this.listenTo(d.fullCollection||d,"remove",function(a){delete e[a.id||a.cid],0===(d.fullCollection||d).length&&this.checkbox().prop("checked",!1)}),this.listenTo(d,"backgrid:refresh",function(){if(0===(d.fullCollection||d).length)this.checkbox().prop("checked",!1);else for(var a=this.checkbox().prop("checked"),b=0;b<d.length;b++){var c=d.at(b);(a||e[c.id||c.cid])&&c.trigger("backgrid:select",c,!0)}});var f=this.column,g=this.$el;this.listenTo(f,"change:renderable",function(a,b){g.toggleClass("renderable",b)}),b.callByNeed(f.renderable(),f,d)&&g.addClass("renderable")},/**
+initialize:function(a){this.column=a.column,this.column instanceof b.Column||(this.column=new b.Column(this.column));var d=this.collection,e=this.selectedModels={};this.listenTo(d.fullCollection||d,"backgrid:selected",function(a,b){b?e[a.id||a.cid]=1:(delete e[a.id||a.cid],this.checkbox().prop("checked",!1)),c.keys(e).length===(d.fullCollection||d).length&&this.checkbox().prop("checked",!0),d.trigger("backgrid:selection:updated")}),this.listenTo(d.fullCollection||d,"remove",function(a){delete e[a.id||a.cid],0===(d.fullCollection||d).length&&this.checkbox().prop("checked",!1)}),this.listenTo(d,"backgrid:refresh",function(){if(0===(d.fullCollection||d).length)this.checkbox().prop("checked",!1);else for(var a=this.checkbox().prop("checked"),b=0;b<d.length;b++){var c=d.at(b);(a||e[c.id||c.cid])&&c.trigger("backgrid:select",c,!0)}});var f=this.column,g=this.$el;this.listenTo(f,"change:renderable",function(a,b){g.toggleClass("renderable",b)}),b.callByNeed(f.renderable(),f,d)&&g.addClass("renderable")},/**
        Propagates the checked value of this checkbox to all the models of the
        underlying collection by triggering a Backbone `backgrid:select` event on
        the models on the current page, passing each model and the current
@@ -88,7 +88,7 @@ onChange:function(){var a=this.checkbox().prop("checked"),b=this.collection;b.ea
      @member Backgrid.Grid
      @return {Array.<Backbone.Model>}
   */
-b.Grid.prototype.getSelectedModels=function(){for(var a,b=this.header.row.cells,c=0,d=b.length;c<d;c++){var f=b[c];if(f instanceof e){a=f;break}}var g=[];if(a){var h=a.selectedModels,i=this.collection.fullCollection||this.collection;for(var j in h)g.push(i.get(j))}return g},/**
+b.Grid.prototype.getSelectedModels=function(){for(var b,c=this.header.row.cells,d=0,f=c.length;d<f;d++){var g=c[d];if(g instanceof e){b=g;break}}var h=[];if(b){var i=b.selectedModels,j=this.collection.fullCollection||this.collection;for(var k in i){var l=j.get(k);l instanceof a.Model&&h.push(l)}}return h},/**
      Convenient method to deselect the selected models. This method is only
      available when the `SelectAll` extension has been included.