Crossword Genius

Undecided where rocket should go (2,2,3,3)

Ross

I believe the answer is:

up in the air

'undecided' is the definition.
(I've seen this before)

I don't understand the remainder of the clue.

(Other definitions for up in the air that I've seen before include "open to debate" , "Unsettled" , "Not yet settled" , "9 [FLYING]" , "Where skiers go" .)

I've seen this clue in The Times.
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