If Xbee module is set in API mode thr X-CTU software, does I need to set it again in API mode thru AT comm in appl

If Xbee module is set in API mode through X-CTU software, does I need to set it again in API mode I want to put Xbee module in API mode thru X-CTU software & then useit in my embedded application through API mode commands & data. Does I need to issue AT command to Xbee module for switching to API (from my processor at start up ) or it remains in API forever

It will stay in API mode.