Changes position and rearranges one's straps (10)

I believe the answer is:

transposes

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'changes position' is the definition.
'transposes' can be an answer for 'changes' (transposing is a kind of changing). I'm unsure of the 'position' bit.

'rearranges one's straps' is the wordplay.
'rearranges' indicates an anagram (I've seen 'rearranged' mean this).
'ones'+'straps'='onesstraps'
'onesstraps' is an anagram of 'TRANSPOSES'.

'and' acts as a link.

Can you help me to learn more?

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

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