Cuts off export and import facilities (5)

I believe the answer is:

docks

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'cuts' is the definition.
(docking is a kind of cutting)

I can't explain the rest of the clue.

(Other definitions for docks that I've seen before include "Cuts short, curtails" , "main cargo area" , "Removes tail" , "Enclosures where defendants sit" , "Reduces" .)

I've seen this clue in The Globe and Mail.

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