Hi Mayur,
I think you are talking about Product Segmentation.
We do not want to create product segmentation because we can't use it for campaign execution.
Also we are using BI Query as a data source with pre-defined filters in BI. So when we create customer segments in CRM, already the duplicate BP ID's are deleted by standard.
We kind of using a work around as of now - by creating multiple TG's if the same BP occurs more than once using a custom program. But again for ad-hoc or manual modelling of TG we are still facing the issue with duplication entries being deleted.
Regards,
Siraj