Met brigand - that has changed summary (10)

I believe the answer is:

abridgment

'summary' is the definition.
(abridgment is a kind of summary)

'met brigand that has changed' is the wordplay.
'that has changed' indicates anagramming the letters.
'met'+'brigand'='metbrigand'
'metbrigand' with letters rearranged gives 'ABRIDGMENT'.

I've seen this clue in The Daily Express.

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