OP, if you go to the club with the intention of wearing a white belt and starting again, then this humble approach may pay off. I moved from Wado Ryu to Shotokan and turned up in a white belt. After the first lesson, Sensei saw that I had experience asked the question and told me I could keep my rank as I had clearly earned it (his words) and that I could pick up the style differences in retrospect. Always be humble, don't go in with any expectation of special treatment.