A reactive antibody test does not necessarily mean a person still has Hepatitis C. Once people have been infected, they will always have antibodies in their blood. This is true if even if they have cleared the Hepatitis C virus. A reactive antibody test requires an additional, follow-up test to determine if a person is currently infected with Hepatitis C.
Your antibodies never went away even after SVR, you will always be positive for antibodies, nothing you can do about it. If your worried you will have to get a RNA test to see if you have been reinfected but from your statement I doubt that is the case.