Did you ever figure it out ?
Some people with hsv1 don't test pos for it. The hsv1 test isn't quite as accurate as the hsv2. That being said if you have lesions swabbed and the virus is present then it would be positive. Blood tests are looking for antibodies and the swab will find the virus itself. Thats why the swab always trumps the blood test.
Since the swab was positive it would overrule any blood test. There are people who never test positive with a blood test.