Thanks for the answer lorro,
I’ve scheduled the cron call because if I keep on creating products, the wp_option table keeps growing without control. So, the system does elaborate them little by little.
I’m just wondering if those scheduled things are really useful or totally useless for WP (in some blog they say “you can drop them…”), or if is there a way to prevent WP to create them during import procedure. Many of them are “delete_version_transient”…