Why Didn't the Insurers Challenge the 9/11 Lies?

Saudi Arabia Behind Attacks, Insurers Tell Court: http://www.insuranceinsider.com/-1242713/26
They can't have assumed they would win a case against Saudi Arabia--my guess is they were otherwise compensated (perhaps simply by a rise in premiums after 9/11) and that this is just a way to make mo' money...
After doing a search for the listed companies I found this article that contains some interesting analysis of the effect of 9/11 on the insurers/reinsurers: http://opim.wharton.upenn.edu/risk/downloads/archive/arch257.pdf
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