Sara1 was the original sara download from Daz. DarkWhisper changed the face of Sara1 and Daz did not tell anybody and used the same link for Sara2. Sara 2 is the unofficial name of the new sara. If you had downloaded before the switch, and downloaded the new one then you would have 2 saras sara 1 and sara 2 but with different faces. unfortunately if you did not know, Sara2 files are the same name as Sara1 and would overwrite old sara. if you find clothing for "Sara" you are fin with either version of the Sara model, if it's morphs for the face, or textures including head textures then you have to investigate wether they will work with new Sara2. hope that explains a bit.