Getting redundant sign updated (13)

I believe the answer is:

understanding

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'getting' is the definition.
(get can mean to understand or appreciate)

'redundant sign updated' is the wordplay.
'redundant sign' anagrams to 'UNDERSTANDING'.
Though, I'm not sure how this is indicated.

Can you help me to learn more?

(Other definitions for understanding that I've seen before include "Empathy" , "perception" , "Gathering" , "compassionate" , "Compassion" .)

I've seen this clue in The Times.

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