//initialise and load ETL source
		module = createModule();
		module.parse(getFile(getSource()));

		//load merged model (A)
		module.getContext().getModelRepository().addModel(getDecentModel(location));
		
		//iterate over models to be merged  (Bi)
		for (int i : list) {
			//load Bi instance 
			IModel famixModel = getFamixModel(location,i);
			module.getContext().getModelRepository().addModel(famixModel);

			//execute ETL
			preProcess();
			result = execute(module);
			postProcess();
			
			//remove the merged instance Bi - neither			
			//module.getContext().getModelRepository().getModelByName("FAMIX").dispose();
			//nor 
			//module.getContext().getModelRepository().removeModel(famixModel);
			//seems to work as the ETL transformations are not executed after the first iteration
			//perhaps I am missing reset the module without disposing of the source or at least of the merged target A
			
			//default approach which works but has potential performance implications
			module.reset();
			//reload
			module.parse(getFile(getSource()));
			module.getContext().getModelRepository().addModel(getDecentModel(location));
		}
		module.getContext().getModelRepository().dispose();