Went to pieces finding the old places changed (9)

I believe the answer is:

collapsed

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'went to pieces' is the definition.
The answer and definition can be both to do with human feelings as well as being past participle verbs.
Perhaps you can see an association between them that I can't see?

'the old places changed' is the wordplay.
'changed' indicates anagramming the letters.
'old'+'places'='oldplaces'
'oldplaces' anagrammed gives 'COLLAPSED'.

'finding' is the link.

Can you help me to learn more?

(Other definitions for collapsed that I've seen before include "Gave way, caved in" , "laid low" , "Fell apart" , "Cracked up - gave way" .)

I've seen this clue in The Globe and Mail.

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