In PSO, there are resources that were created a couple of years ago and given shifts but haven’t been scheduled in the rota for at least a year. Those resources are kept in PSO in case they get assigned to new areas. Unfortunately it appears that when Background Rota Generation is utilized, these non-current resources are appearing again in the Scheduling Gantt. We’ve made sure they are not in any current rota, and do not have any associated shifts. We’ve also removed their Division data. This hasn’t stopped PSO from now generating shifts for them during the background rota generation. What can be done (other than deleting the resources) to stop PSO from creating shifts for those resources and showing those resources in the scheduling gantt? Is there some way to permanently clear their long-ago shift information so PSO will stop including them in background shift generation, as well as including them in divisions that do not apply anymore? We can see the hierarchy in PSO documentation for how the process executes, but need to stop the process from finding old data and replicating that. This is PSO 6.13.0.62, and we use FSM as our EA.