fixed conversion from moment to ISODate

lib/util.js

@@ -470,7 +470,7 @@ exports.convert = function (object, type) {
           return new Date(Number(match[1])).toISOString(); // parse number
         }
         else {
-          return new Date(object).toISOString(); // parse string
+          return moment(object).format(); // ISO 8601
         }
       }
       else {