After some testing I see Manticore does actually Wipe out Kill list IDs from main index after Main+Delta merge. Which is Great undocumented feature. And that makes Manticore more resource friendly than Sphinx. And this feature allows me to clear Kill List from MySQL after each merge not once a day and it also frees me up from making FULL REINDEX after emptying Kill List in MySQL.
Is there an option to use in config to stop receiving this warning after each delta reindex?
WARNING: killlist_target is specified but kill-list is empty
Since delta reindex runs often with a cron job - unnecessary warnings in email become nuisance.