Siebel Marketing Segmentation Contacts Not Correctly Populated By organization

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Hi
We are using biee marketing segmentation in siebel crm system.
After i load campaign with bi segmentation, i found contacts exist in All Contacts/Prospects Across Organization View with default organization. Not displayed in All Contacts/Prospects view.
I checked organization for all the contacts, they belonged to customized organization but not the default.
So does the campaign and segmentation list.
Where did this default org come from?
Any ideas?

Thanks in advance!

Alvin