in _upload.cfm in the fileuploadOptions object add:
	loadExistingFiles: <cfoutput>#IsDefined('loadExistingFiles') ? loadExistingFiles : 'true'#</cfoutput>,

in fileupload.js add near the top:
	this.loadExistingFiles = options.loadExistingFiles;
same file wrap the // Load existing files logic with an if-statement:
	if (that.loadExistingFiles) {
		// code
	}

in upload.js add near the top:
	loadExistingFiles: options.loadExistingFiles,

lastly, be sure to pass a CF variable in the calling page you use for loadExistingFiles = false