SF class not taken over

Hello, currently have the following problem with my insurance. I bought my first car in February 2012. It is insured as a second car on my father. I was insured at ADAC at that time and was classified as SF3 there. At the end of 2013 I wanted to change the insurance to AdmiralDirekt, there I indicated SF5. Now I was informed today that the SF class 5 could not be taken over and I was classified in SF2. According to AdmiralDirekt it was probably a extra ADAC discount… Isn’t there a way to take over the better SF class? Basically I understand it, only it is about more than 200€.