[dnanian]

It sounds like you're confusing the "main window", Dasman, with the scheduled item. As the manual explains, the scheduled copy is completely independent of the settings in the main window: once scheduled, further changes to the main window doesn't change something that's already scheduled.

So, if you want to change various things about it other than the date/time of the run, delete the one that's there already, set things up in the main window, and then click "Schedule". That'll add a new copy to the list.