Bug? Why does Control Rig loose its reference in Sequencer? UE5.1.1

Why does Sequencer loose its reference to Control Rig?

  1. I can drag the control rig into Sequencer and do some animation in editor.
  2. Save All in the Main Project.
  3. Then, I close the project and exit UE.
  4. Launch UE and open the project, and all the references to Control Rig and the camera are gone?

How do I re-link the Control Rig back into Sequencer?

Seems like we need to close the sequencer down and re-open it to see the Control Rig and cameras re-linked in Sequencer.