Crossword Genius

Old for new exchange was badly trained (5-2)


I believe the answer is:


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'old for new exchange' is the definition.
I can't judge whether this defines the answer.

'badly trained' is the wordplay.
'badly' is an anagram indicator.
'trained' is an anagram of 'TRADE-IN'.

'was' is the link.

Can you help me to learn more?

(Other definitions for trade-in that I've seen before include "Older article used in part payment to retailer" , "I daren't (anag)" , "Part-exchanged item" , "Article used in part-exchange" , "Old item given in part payment for a new one" .)

I've seen this clue in the Sydney Morning Herald.
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