concatenate

does concatenate copy dim labels when concatenating 2D waves without promotion (concatenate/NP) ? maybe i am doing something wrong but the new wave only has the column dimlabels from the first wave in the concatenate list: 

concatenate/NP {2Dwave1, 2Dwave2, etc}, big2Dwave  //big2Dwave only has the column labels from 2Dwave1...

thanks

diego