Lots of Families to change Solid to Void Identity Data

Hi Guys,

I have a large MEP model which indicates lots, lots, an lots opening to be cut on my structural models, however all MEP opening have been model as Mechanical Equipment Categories and each of thousands (16000) of families identity data given a Solid parameter instead of being assigned as Voids. 1oid.
Is there a way of changing all families identity data onto Voids, if I have all voids I am able to cut all opening on my structural model.

I should have mentioned that at the moment I am using the workflow below to cut openings on my structures which requires voids.

More than happy to take another approach if works better taking solids or any other mean, ultimately I am aiming for is to have my openings matching the MEP model containing all Mechanical Equipment as openings.