Street partying went ahead: moved elsewhere (9)
I believe the answer is:
resettled
'moved elsewhere' is the definition.
(I've seen this before)
'street partying went ahead' is the wordplay.
'partying' is an anagram indicator (I've seen 'parties' mean this (the letters move or party around)).
'went ahead' becomes 'led' (I've seen this in another clue).
'street' is an anagram of 'resett'.
'resett'+'led'='RESETTLED'
(Other definitions for resettled that I've seen before include "Again took up residence" , "paid again" , "moved elsewhere" , "found new home" .)