Problem solved. I downloaded the Dummy protocol for Miranda 0.95.7, Done steps 2-5 and step 1 from "Since Miranda 0.95.5 and newer" and restarted Miranda, than upgraded Miranda to 0.95.8 and the AIM contacts in the Dummy protocol survived and appearing. It looks like the installation of the newer 0.95.8, completely erases the AIM protocol completely including all of its contacts and history.