Love special task to find something left out (8)

I believe the answer is:

omission

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'something left out' is the definition.
(I've seen this in another clue)

'love special task' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'special task' becomes 'mission' (I've seen this before. I am not sure about the 'special' bit.).
'o'+'mission'='OMISSION'

'to find' acts as a link.

Can you help me to learn more?

(Other definitions for omission that I've seen before include "Failure to include" , "type of sin" , "Something lacking" , "Leaving-out, oversight" , "Mistake resulting from neglect" .)

I've seen this clue in The Times.

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