Hi Sekhar,
So, you need to copy just Transaction data from one box to another, not structure of the Model since both of them came from Production, right?
Since it's a one time deal I can see 2 options: via flat file and using BPC load. Which option to choose probably depends mainly on number of records in the Model.
With small record number export and import would be a straightforward solution. Or UJBR just for that one Model.
If that Model has plenty of data then it makes sense creating a Virtual Provider in the target system based on Base cube in the source system. Then load from that VP to your target Model.
Regards,
Gersh