Saving work on tag fix

app/app/services/document.js

@@ -73,10 +73,12 @@ export default Ember.Service.extend({
 	// saveDocument updates an existing document record.
 	save(doc) {
 		let id = doc.get('id');
+		let data = doc.toJSON();
+		Ember.set(data, 'id', id)
 
 		return this.get('ajax').request(`documents/${id}`, {
 			method: 'PUT',
-			data: JSON.stringify(doc)
+			data: JSON.stringify(data)
 		});
 	},