Probelm in Smart forms Download/upload into Ecc6.0

Dear Friends,

i m working on Sap4.6c version i want to download smartform(report) from 4.6c and upload it into ECC6 so is there is any utility to do this.

regarding sapscript there is one program rstxscrp to do this, is there is any such program for smartform.

thanks in advance

regards,

Bhaskar.