Allowing New Times/Days to only be Applied to Future Days
I would like to make it so if I have to change the time of a subject permently for the rest of the year that it does not affect the days that are in the past. For example, say I have Writing from 9:00 - 9:30 everyday, and Content from 2:30 - 3:00 (Monday and Tuesday), because of the addition of a new class my school receives a whole new schedule and I no longer have content on Monday and Tuesday but only Thursday and Friday and writing is in the old content space. When I change the time of the classes or days of the classes it changes ALL of them, even the ones that have already happened. It really messes up the plans in the past and future when you have to change the time or days a class happens.