One reportedly celebrated after setter went north to move abroad (8)
I believe the answer is:
emigrate
'move abroad' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for emigrate that I've seen before include "Tiger Mae has gone abroad to live, oddly" , "Go to live and work in another country" , "Gear item (anag.)" , "Leave the country to settle abroad" , "Settle overseas" .)