Schlage Zwave & DSC Alarm Plug in

My Schlage z wave locks randomly stopped disarming my alarm. I had a scene where a pin code entered on the door kepad would unlock the door and disarm my alarm through the dsc plug-in. I have tried different pin numbers, different pin indexes but it no longer disarms the alarm. I have other devices that disarm my alarm and I confirm that vera is seeing the status of the schlage locks (unlocked or locked). I am using a Vera Edge with the most current firmware. Any suggestions are greatly appreciated.

Does Vera see the change in lock status immediately? Occasionally I had this issue with a previous set of Yale locks - they would effectively drop off the network for short enough periods of time that Vera would not yet flag them as not responding.