Guard has withdrawn? Correct (6)

I believe the answer is:

redraw

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'guard' is the definition.
Both the answer and definition are verbs in their base form.
Perhaps there's an association between them I don't understand?

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for redraw that I've seen before include "Find a new winner" , "Design again" , "Change" , "Sketch again" , "Warder (anag)" .)

I've seen this clue in The Times.

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