if you are on a slow connection, on many web sites including SS, when you add a MR form or make another change, a slow or bad connection can cause you to think the change was made when in fact it was not.
check to make sure it says "saved" and in the case of SS I think it makes the save button unclickable when the save is done properly.
also, I have had previously accepted release forms from years ago accepted, and then rejected recently because of problems with the form.