xbee wont respond after arduino wakes up

I have pin 9 and 13 connected to into my arduino board so that the xbee will wake the arduino when the xbee wakes up on its sleep cycle and then I have the arduino force sleep the xbee when its done sending. However, when the xbee wakes back up, the arduino cannot communicate to it unless its forced reset by the xbee reset pin. Any ideas?