Why do the resource not deactivate in resource group on resource structure when employee is terminated

Hi

When we terminate employment on IFS Cloud the resource still remains active in the resource groups on the resource structure. Only the resource capacity validity period is updated on the termination but the resource can still be allocated to projects. Yes the system gives a warning that the employee is terminated but its still available. Also the employee/resource is not removed from the existing project allocations. How can we get the termination to remove the resource or deactivate it?