Converting from possessable to spawnable with override instance data can cause the actor to shift

Actors when converted to spawnables are given a transform track, and the default position of doesn't seem to be saved to the template for blueprint actors. Compare the above behavior to a static mesh actor.

• Create a new blueprint actor
• Add a cube static mesh component to the actor and save it
• Drag the actor into a level then add it to a sequence
• Delete the transform track on the actor
• Override the instance data on the sequence actor and change its transform origin
• The actor should not be moved as it does not have a transform track
• Convert the actor to a spawnable

RESULT

The actor has a transform track added to it which causes the origin offset to move it. Deleting the transform track moves it back to the world origin, not its original world position.