Do you know for a fact they didn’t try? Who would buy a 737 Classic simulator anyway? They were already a dying breed by the time Cranebank closed in 2015, with most airlines having already moved to either the NG or Airbus. Moving it to a new location would have cost more than it was worth. If there had been more space in TBA I suspect BA might have put it there temporarily rather than let it succumb the way it has.