Either turn off audio in the inspector or use “detach audio”. Break apart clip items does clear effects. It’s also pretty drastic and I’ve never found a need for using it on an individual clip. It is more suited to breaking apart compound clips or storylines.
To shut off audio just use the inspector. As Bret indicated, it leaves you the option of turning it back on easily if the producer changes mind again. LOL – that’ll never happen!
anickt