One again inert, due to move (8)
I believe the answer is:
reunited
'one again' is the definition.
(to be 'one' is to be united)
'inert due to move' is the wordplay.
'to move' indicates an anagram.
'inert'+'due'='inertdue'
'inertdue' is an anagram of 'REUNITED'.
(Other definitions for reunited that I've seen before include "Brought or joined together again" , "back with old friends?" , "Brought together again after separation" , "Got together again" , "made one again" .)