How to add independent object (not duplicated with env_ids) in Isaac Lab

Omniverse Isaac Sim
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Hello,
I’m using the ManagerBasedRLEnv in Isaac Lab to create a RL environment. I noticed that every object I defined in the InteractiveScene (except terrain and light) is cloned to num_envs copies. Is it possible to add independent objects into the scene without being cloned?

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If I remove the “{ENV_REGEX_NS}” in the prim_path, the program will report an error.

Thank you for your time!

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We appreciate your understanding and look forward to assisting you.