CK11N not bringing BOM new component

Hi, Please help me with this scenario. I have added new component in a BOM with valid from date a week ago and performing CK11n today but it is not showing new component in it. Why? I have maintained new component as altitem group and specified priority as well as probability but still it is showing first item from altitem group in CK11N, where am I missing the settings of new component. Costing 2 view is maintained correctly for both components from altitem group.