That's what it seems might be the likely scenario . . . but who knows if they'll pull some crap like "Degaton went back and changed time AGAIN, so if we go back and stop Degaton before he changes time, we'll restore EVERYTHING that he wound up erasing"?
We can only wait (and wait . . . and wait . . . ) to see if / how they'll do anything with that (or if they'll keep delaying it forever).