Hi,
Are you able to change the Status profile from GUI under TC 'CRMD_ORDER'?
If yes then just put a debugger in the CRM_STATUS_MAINTAIN_OW and try to change the status profile in GUI and check what all the parameters the standard is passing to this function module and then use the i your own Report......
If this FM will not get called then try to use crm_order_maintain and check in the same way...
Hope it helps..
Thanks
Kumar