Moving component from one stream to another

You can simply add the component to the other stream. You can select which baseline the component should initially show. The component is just a kind of container and you can have the same component on different streams and develop versions independently. If you need to get versions from one strem back to another,you use the flow target to point your repository workspace, that is loaded with the information from one stream to the other stream and you can then accept/merge/deliver changes/differences between the stream and the workspace.