I routinely devise plans for changes to a student's schedule that we agree should happen after the school day that's currently in progress. They may be swapping history and math sections, for instance, and history will have already met today but math hasn't, so rather than have them attend two history sessions, I have them attend math once more and then switch effective tomorrow.

But even when I use the date box to make each change effective as of a date in the future, the student's groups menu, schedule, and presence on course rosters changes immediately. (This is confirmed in this help article: https://kb.blackbaud.com/knowledgebase/articles/Article/97809).

I guess this leaves the change date as nothing more than a data point in the student's enrollment records. It would be much more useful if the changes wouldn't actually take effect until the date has been reached.