We have our custom solution for analytics to coveo for 'AttachToCase' button, do we need to disable the sending the out of the box functionality to send Analytics data to the Coveo Usage. if yes, is there a setting that can help us manage this .Our package version is '1.860.1'.
There is no setting for that, no. And disabling just that part of the analytics reporting might prove tricky. Why exactly are you using custom code to report that part?