Issue with Reference of Object Object Spawned by Another Shot After Reopen the Level

If you use an object to be spawned in one shot in another shot, re-opening the level will lose reference in that shot.

1. Make level and MasterSequence ( use default settings )
2. Add static mesh ( e.g. cube ) to shot0010_001
3. Change the added track to Spawnable
4. Set "Spawned Object Owner" Property of the track to Master Sequence
5. Move shot0020_001
6. Add the static mesh is spawand by shot0010_001 to shot0020_001
7. Add animation to the static mesh ( e.g. Simple lateral movement ) using sequencer
8. Confirm that the animation plays properly ( This confirmation should succeed )
9. Reopen the level
10. Confirm that the animation plays properly ( This confirmation should failed)