hunio

It happens for me as well, the filename doesn’t changed when I purge all cache. I ended up add a prefix to the cache filename based on theme version.

/**
  * Define Our Themes Version
  * this good if we update something and prevent old user browser cache
 */
global $themes_version;
$themes_version = '2.1.2'; // Change this version everytime you change your css/js assets 

add_filter('w3tc_minify_urls_for_minification_to_minify_filename', 'w3tc_filename_filter', 20, 3);
function w3tc_filename_filter($minify_filename, $files, $type ){
    
    global $themes_version;
    
    $ver = sanitize_title( str_replace('.','', $themes_version) );
    
    $minify_filename = $ver.$minify_filename;
    
    return $minify_filename;
    
}

Hope it helps someone