For a muon collider a 6D cooling is necessary. Emittance exchange using
wedge absorbers may be employed for the required longitudinal ionization cooling. A polyethilene wedge has been manufactured and placed in MICE for such a scope. Data have been collected for both direct emittance exchange (longitudinal emittance decreases) and reverse emittance exchange (transverse emittance decreases). Simulation has shown the soundness of the method, while data analysis is in progress.