When transporting workflows, you have to differentiate between the workflow definition and the agent assignment.

A workflow definition is a workbench request. When you save the workflow, a workflow version is created and a request written. Further information about the transport or about the status management is provided in note 378487 and in the notes mentioned there under related notes.
However, where the agent assignment is concerned, this is a Customizing request. To allow transport of agent assignments, the value of the semantic abbreviation CORR for the TRSP group name must be empty in table T77S0.