function FILTER_CACHE_DESTROY_FILTER ($data) {
// Skip this step if the cache instance is not there
//* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'Called!');
- if ((!isCacheInstanceValid()) || (getConfig('update_filter_usage') != 'Y')) {
+ if ((!isCacheInstanceValid()) || ((isConfigEntrySet('update_filter_usage')) && (getConfig('update_filter_usage') != 'Y'))) {
return false;
} // END - if