Copying Data To Another Application

I believe what you are looking for is a Lifecycle Management Tool that would be available to migrate certain portions of data between applications.  Currently there is not a tool available to do this, however I did want to point out that there is a solution on the Solution Exchange > Community Solutions named "Cube Data Manager" that will Enable a OneStream Administrator or Consultant to efficiently transfer cube data between environments, applications, and scenarios.  This is something that is not supported directly by OneStream, but is available as a community solution that you could take a look at.

Hope this helps.