The column that the stat uses is defined like this:
sum(if[(
holdem_limit.limit_name = '$0.02/$0.04' OR
holdem_limit.limit_name = '$0.05/$0.10' OR
holdem_limit.limit_name = '$0.10/$0.20' OR
holdem_limit.limit_name = '$0.25/$0.50' OR
holdem_limit.limit_name = '$0.50/$1' OR
holdem_limit.limit_name = '$1/$2') And
holdem_hand_summary.amt_rake >= .40 OR
holdem_hand_summary.amt_rake >= 1, 1, 0] +
if[(
holdem_limit.limit_name = '$0.02/$0.04 (6 max)' OR
holdem_limit.limit_name = '$0.05/$0.10 (6 max)' OR
holdem_limit.limit_name = '$0.10/$0.20 (6 max)' OR
holdem_limit.limit_name = '$0.25/$0.50 (6 max)' OR
holdem_limit.limit_name = '$0.50/$1 (6 max)' OR
holdem_limit.limit_name = '$1/$2 (6 max)' OR
holdem_limit.limit_name = '$2/$4 (6 max)' OR
holdem_limit.limit_name = '$3/$6 (6 max)' OR
holdem_limit.limit_name = '$5/$10 (6 max)' OR
holdem_limit.limit_name = '$10/$20 (6 max)' OR
holdem_limit.limit_name = '$30/$60 (6 max)' OR
holdem_limit.limit_name = '$50/$100 (6 max)' OR
holdem_limit.limit_name = '$100/$200 (6 max)' OR
holdem_limit.limit_name = '$200/$400 (6 max)' OR
holdem_limit.limit_name = '$500/$1000 (6 max)' OR
holdem_limit.limit_name = '$1000/$2000 (6 max)') AND
holdem_hand_summary.amt_rake >= 2 OR
holdem_hand_summary.amt_rake >= 3, 1, 0] +
if[holdem_hand_summary.amt_rake >= 5, 1, 0])
Each limit is named explicitly, so if you are playing at a site where the levels are named differently then this won't work - you will need to edit the column.
It might just be that you're not using the Adjust Qualifying Tables Limits option so your tables aren't being recognized (and named) as 6 max?
Tutorial: Auto Import settingsI think there may be a better way to check for limit types like this, but I'll have to investigate later when I have some time.