hello Rahul,

yes, it will upgrade only if your rank is under the closing rank of various branches.

you should go through the opening and closing rank in various rounds for branches and college which you have filled, which may give you an idea of probably the chances of upgradation of college and branch.

use this link to get an idea about chances of upgradation.(https://www.sarvgyan.com/articles/wbjee-2018-cut-off)copy and paste this link on your web browser.

hope it helps

best of luck.