THIS IS HARD TO EXPLAIN, BUT I WILL TRY.
WHEN I DOWNLOAD 2015 AND 2016, I DO THE TAX RETURNS AND THEN SAVE THEM. 2015 SAVE, 2016 CARRYFORWARD, SAVE. THEN WHE I GO TO OPEN 2015 IT HAS BECOME A 2016 AX RETURN EVEN THOUGH I OPENED 2015. AS LONG AS I HAVE 2015 AND 2016 UFILE SOFTWARE ON MY COMPUTER AT THE SAME TIME, 2016 WILL OVERWRITE 2015. THIS IS 3 YEARS IN A ROW. ALL OTHER TAX YEARS ARE FINE