Create a setup for Inactivation Options (like the No-Show Setup) that would allow certain STU.TG codes not to trigger it. Or, allow a STU.TG code to have an amount value that would not trigger the dialog. A code with this amount value code could then be used as a temporary inactivation (for example, to allow another school to add a concurrent enrollment when the District Setting "Students must be inactive at last school before enrollment at another school" is active) that would not remove classes from (or change the course attendance in) the original enrollment.