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Note the preview is not accurate and warnings may not indicate real issues.
Link Objects to Scene
Object ‣ Link/Transfer Data ‣ Link Objects to Scene
Links the selected objects into a different scene than the current one.
The Link Objects to Scene in the bpy.ops.screen.redo_last panel lets you choose between scenes.
This makes the same object exist in more than one scene at once,
including its position and animation data.
The object’s origin will change its color to reflect that.