Total Found Count Miss-match while doing sorting V2.1 Sphinx -

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when sorting on unixtimestamp date field total_found count shows different result . here query 

select * ca_sac_persons,ca_kc_persons,ca_sfc_persons,ca_sj_persons match('@fullname("^john$" | "^joseph$" | "^jose$" | "^josh$" | "^robs$")')  order filing_date_ts desc limit 0,1;show meta;   result : +---------------+-------------+ | variable_name | value       | +---------------+-------------+ | total         | 1000        | | total_found   | 4813        | | time          | 0.019       | | docs[9]       | 4603        |  | hits[9]       | 5312        | +---------------+-------------+  select * ca_sac_persons,ca_kc_persons,ca_sfc_persons,ca_sj_persons match('@fullname("^john$" | "^joseph$" | "^jose$" | "^josh$" | "^robs$")')  order filing_date_ts asc limit 0,1;show meta;   result : +---------------+-------------+ | variable_name | value       | +---------------+-------------+ | total         | 1000        | | total_found   | 4812        | | time          | 0.019       | | docs[9]       | 4603        |  | hits[9]       | 5312        | +---------------+-------------+

why total_found shows 1 record less in 2nd query ?


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