In many CDAs or NDAs it will be stated that the information belongs to the disclosing party, therefore any version or permutation of the information is still covered by the agreement. I believe in this situation specifically, the disclosing party can pursue legal action against the receiving party, and would likely have to prove that the information is in fact the same information or based on the information disclosed. In the event of any controversy or claim arising out of or relating to this agreement, the parties will either handle the matter by mediation or government arbitration.