I have an effort task
start date: 31-Mar-2018 (uneditable)
finish date: 30-Apr-2018 (editable)
ETC: non-zero accepts
ETC: 0- does not accept and change to 42
I tried changing finish date and ETC multiple times, but unable to change ETC to 0.
I went to Task--> Assignments, tried to change ETC there but no help either.