The ability to make an assignment worth zero points has been removed in a recent update. Please bring this back. A number of teachers at my school and I used to make extra credit assignments worth zero and then give the kids points to add to their total points. We have found that choosing the EXTRA CREDIT button in an assignment causes strange calculations that we do not understand, whereas setting an assignment to ZERO allows us to easily add to a kid's total points and the math works as we expect it to. This has been a feature since we started using blackbaud many years ago and now, all of a sudden, it's gone.