thelionwarrior - thank you for making that part clear. was reading what rc1968 was posting/linking and for some reason rc1968 didn't mention the two elements of exemption, which i actually brought up/speculated at a high level last friday (post 25825) before everyone got deep on the NOL discussion.
if both elements check out, only written off interest prior 3 tax years reduce the NOL - let me know if that's not correct based on the woodllp info.