Had got through to - or registered (7)

I believe the answer is:

entered

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'registered' is the definition.
(entering is a kind of registering)

I don't understand the rest of the clue.

(Other definitions for entered that I've seen before include "Put down" , "Enrolled or went in" , "Logged; arrived" , "Went in and registered as competitor" , "moved in" .)

I've seen this clue in the Evening Standard.

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