Sophisticated? Moved on (8)
I believe the answer is:
advanced
I believe this clue is a double definition.
'sophisticated?' is the first definition.
(similar in meaning)
'moved on' is the second definition.
('advance' can be a synonym of 'move on')
(Other definitions for advanced that I've seen before include "early" , "Precocious" , "Lent - ahead in development" , "Moved forward" , "promoted" .)