Disregarded amendment for redoing (7)
I believe the answer is:
ignored
'disregarded' is the definition.
('ignore' can be a synonym of 'disregard')
'amendment for redoing' is the wordplay.
'amendment for' is an anagram indicator (to amend is to edit or correct).
'redoing' is an anagram of 'IGNORED'.
(Other definitions for ignored that I've seen before include "Took no notice of" , "Left out in the cold" , "Neglected" , "Disregarded intentionally; failed to consider" , "Snubbed" .)