Please mention about which counselling you are talking about.

You have to study business rules thoroughly to know about seat withdrawl rule as the policy changes every year.

https://josaa.nic.in/webinfocms/Handler/FileHandler.ashx?i=File&ii=59&iii=Y

https://engineering.careers360.com/articles/wbjee-counselling

https://upsee.nic.in/publicinfo/Handler/FileHandler.ashx?i=File&ii=215&iii=Y