I’m guessing this was originally a carpet on timber on concrete floor and an owner has removed the carpet.
I would go back to the owner and say that if they want the floor repaired at Owners Corp expense, they will have to replace the carpet as it was only damaged becasue the protective carpetting was removed.
Or ask them to prove that they didn’t damage the floor and let them run the case at NCAT if they aren’t happy with that.
They are trying it on, so fight fire with fire.