Capricious advertiser said to leave it and go back to original version (6)
I believe the answer is:
revert
'capricious advertiser said to leave it and go back to original version' is the definition.
I can't tell whether this defines the answer.
'capricious advertiser said to leave' is the wordplay.
'capricious' is an anagram indicator.
'to leave' suggests deleting specific letters.
'advertiser' with 'said' taken out is 'verter'.
'verter' anagrammed gives 'REVERT'.
Can you help me to learn more?
(Other definitions for revert that I've seen before include "Regress" , "Return to (earlier state)" , "Go back to a former practice" , "Go back to former condition" , "Return to former condition or habit" .)