Do you know whether it replaces the one on 29 chaussée d’Ixelles?

According to their website they are still there.  Maybe their website is not up to date.
https://www.basic-fit.com/fr-be/salle-de-fitness/basic-fit-brussels-porte-de-namur-a927b71b822c4b5db83e3d9a6f8504d8.html