Eric Nielsen, export manager of Aicad, the Italian company that markets Lizard footwear, left the company at the end of last week. Nielsen is about to accept a new challenge, but has not disclosed, as of this writing, the company he is going to work for. Aicad has not appointed a successor to Nielsen yet; Luca Pedrotti, the company’s chief executive, will take care of the export business on an interim basis.