Reuse of building structure

Hello, We are working with a major renovation in a stadium. The huge structural external columms will be maintained (100%), but the floor slabs will be demolished, except for some parts of the seating areas. The credit says that you shouldn´t count the collums separately, but considering that most of the slabs they were supporting will be demolished, I wouldn´t be double-counting their area. How should I proceed in this case? Count the collums area or just lose the credit because I won´t have 55% of floor area maintained? Thanks