I left my job where I had access to confidential information and now am being asked to sign an Affidavit. Is it in my best interest to sign this?

I left my job, gave them several months notice so that they could hire someone in my place. I didn't cause any problems, I performed the function of my job just fine. I had a good relationship with my boss for the most part. The only thing (apparently) unusual is that I did not have another job lined up when I resigned. The Affidavit that I am being asked to swear to is mostly fine. There is a small thing that I don't think is factually true about company property I maintained. If it is just a normal form that people sign when they leave a company and had access to confidential information I am ok, but I want to make sure I am protected in the crazy scenario that they are building some kind of case against me.