I can edit any fields in my profile in Profile Center (https://profile.microsoft.com/RegSysProfileCenter/default.aspx?lcid=1033), but cannot clear any value.
For example, i want to clear Home Phone. UI allows me only to save or cancel this filed update. If I input empty string and press save, IU will show error.
Another field which I want to clear is Shipping Info.
MCITP: EA, EMA, VA; MCSA