Неужели в BigY 500 среди Matches у вас он не появился? Я бы на вашем месте написал в службу поддержки FTDNA.
Дамир, я с вами согласен и поэтому написал в службу поддержки. И вот уже пришёл ответ такого содержания.
"Hello Anatoly,
Thanks for contacting us. With the Big Y update to hg38, we also updated the matching algorithm and thresholds.
With the new matching thresholds, another tester must share either the same terminal SNP or be within 4 parent SNPs and also be no higher than a 30 SNP Genetic Distance to be considered a match.
SNP mutations happen approximately once every hundred years. To reach 30 mutations between two men, your common ancestor would have lived about 1500 years ago on average (with the direct lines of the two sons of that ancestor each averaging 1 mutation every 100 years). FTDNA believes 1500 years is a reasonable cutoff for genealogical matching purposes.
While you may have fewer matches with this update, the matches that you do have, or will have in the future, will be within a genealogically relevant time frame. We will continue to add new matches and notify you of those new matches as they are available in the database.
If there is anyone you previously matched that you no longer match and you believe you should based on the new matching threshold, please send us their information and we will investigate.
Best,"
Если я правильно понял FTDNA ограничивает matching по 30 мутациям или 1500 лет до общего предка.