No..they are not copy pasting every.
In bengali version :-
1) ML didn't get the FL out of that locked room...it was the guard sister and others.
2) ML didn't help her in the ragging matter .
3) there's any kinda hug, picking up scenes in initial epis. Or not even any noodles romance scenes.
4) the birthday sequence's not same there as well. Only the students celebrated their. And ML's sister's did a evil plan against FL. Plus there the fall and throw scene was more rudely done. Shonko pusher the bouquet which was in mohor's hand and she fell down hardly on the floor getting hurt on forehead.
So you can see they are not copying everything.
They are doing all the justice...as the main story plot is from bengali version with the respect to that show's scripts they (hindi PH) are following their (bengali ph) scripts but changing it here and there so the none of the character's lose their respect. Keeping the the show morally logical and good with a mixture of drama.
So its not a photocopy thing. They are editing things in a good way
Hope that answers your query. Enjoy watching đ