Do well in filing of a report (2,3)
I believe the answer is:
go far
'do well' is the definition.
'in filing of a report' is the wordplay.
'in' indicates the answer is hidden within the clue.
'GO FAR' is hidden within 'filing of a report'.
(Other definitions for go far that I've seen before include "Achieve great things" , "Make real progress, achieve much" , "Last" , "Succeed" , "Achieve considerable success" .)