It sounds like maybe you rounded and actually dulled the edge while polishing it. It is easy to do on a stropping pad. Even an unpolished edge can shave hair and a polished edge can be dull. Try going back to a courser grit for a few strokes using very light pressure. Then finish again with the 2000 grit but be careful not to round the edge. I know, because I have had this problem myself on occasion. Keep the pressure light and make sure not to flex the sharpening medium around your sharp edge. Good luck.