Unexpected change in Vijayawada-Gulbarga end to end line (6)

I believe the answer is:

vagary

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But I can't explain it at all! Could you help me understand?

(Other definitions for vagary that I've seen before include "Capricious act or idea" , "Clip out, cut off" , "Whim, caprice" , "Erratic action" , "Unexpected and inexplicable change" .)

I've seen this clue in The Hindu.

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