Getting on with the shutting up of the shop-front (8)

I believe the answer is:

boarding

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'getting on' is the definition.
('board' can be a synonym of 'get on')

I don't understand the remainder of the clue.

(Other definitions for boarding that I've seen before include "Staying at school" , "Living at school" , "Getting on (a train)" , "-- School; -- pass" , "public school arrangement" .)

I've seen this clue in the Evening Standard.

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