More over, T&C on Master Cont

governs every rental - the individual contract gives details of renter's specific info (name, address, driver licence, payment method, decline insurance, etc)

The master contract is the basic Terms and Conditions that are normally those small prints at the back. They are universal.

Why you all think the rental car company want to sue the OP or the Op wants to sue the rental car company ?

He wants to claim insurance coverage from his own car insurance that is his purpose, but he lost the important document to proceed. The rental car company refused to cooperate. He can probably call State Attorney of Alaska to ask if he can get a copy that way.