The process instances having all the active worksteps with human performers can be migrated. Process instances with active worksteps with performers of type other than human performer, cannot be migrated.
Process instances with one or more active workstep instances of type ANY cannot be migrated.
One workstep of the source process can be mapped to either one workstep of the target process or none. One source workstep cannot be mapped to multiple destination worksteps.
Only the worksteps of the same type can be mapped. For example, an adapter workstep can be mapped only to another adapter workstep.