Carbon copy, in entirety, rewritten at heart of metropolis (4,6)
I believe the answer is:
city centre
'carbon copy in entirety rewritten' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'heart of metropolis' is the wordplay.
I cannot really understand how this works, but
'heart' could be 'centre' (synonyms) and 'centre' is found within the answer.
'metropolis' could be 'city' (a metropolis is a large city) and 'city' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'at' acts as a link.
Can you help me to learn more?
(Other definitions for city centre that I've seen before include "Focal point of urban area" , "metropolitan area" , "Bullring, say" , "Downtown" .)