Sorry for all the problems you are having, I tried this out in Vue 7 Complete, and if I create a terrain and add an ecosystem, then duplicate that terrain, and reset the material on the duplicated terrain,the original ecosystem still stays intact, however, if I 'clear' the ecosystem on the duplicated terrain then yes it clears the ecosystem on the original terrain, this is in my view odd behaviour, and yet something else that seems to require a 'workaround'.

Jon

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