Originally Posted by sha8192

I don't think you will earn 0 SQM. The reason why you are seeing 0 SQM is because cowtool only sees the Z booking class on the AC codeshare. In another word, you are booked into Z class on AC inventory, cowtool doesn't know how Z class on AC inventory maps to which class on BR inventory, so it assumes AC Z maps to BR Z. However, BR doesn't use Z code for its business class, hence cowtool inferring 0 SQM. If you call into AC reservation, you can find out which BR class this ticket maps into, and you should be able to use that to calculate the SQM you will earn. I doubt it would be 0.
That said, according to AP chart, all eligible BR business classes (C, J, D) only earn 125% SQM, so you probably better off getting 150% by going through ICN.