Move data from YTD to Periodic

Hello Folks,

     We are on EPM 10 SP11. We have a consolidations Model with storage type YTD and we need to move data for some accounts from this Model to another model and that model storage type is Periodic. I would like to know how can we move the data from YTD to Periodic. In the script logic when I give XDIM_MEMBERSET MEASURES=PERIODIC, it is giving issue with storage type has to be YTD.