Did you see my post from last night? I reposted it below. Tricadia et al worked with the 382 rules to retain a significant amount of NOLs without common equity.
This link will discuss, in detail, how NOLs were preserved while canceling common shares.
--My post previous to this stated that Six Flags retained $1.3 Billion of NOLs. --The link above discusses $2.1 Billion of NOLs and an ownership change.
Therefore...Tricadia et al figured out how to save 62% of Six Flags NOLs...with an ownership change.